{"history":[],"article":{"id":"a1039351-d798-4499-a238-e5777c47f455","title":"Alameda County, California","slug":"alameda-county-california","content":":::summary\n**Name:** Alameda County \n**Settlement Type:** [County](https://bliptext.com/articles/list-of-counties-in-california) \n**Image Flag:** Flag of Alameda County, California.svg \n**Image Seal:** Seal of Alameda County, California.svg \n**Map Caption:** Interactive map of Alameda County \n**Image Map 1:** Map of California highlighting Alameda County.svg \n**Mapsize 1:** 200px \n**Map Caption 1:** Location in the state of California \n**Subdivision Type:** Country \n**Subdivision Name:** United States \n**Subdivision Type 1:** [State](https://bliptext.com/articles/u-s-state) \n**Subdivision Name 1:** [California](https://bliptext.com/articles/california) \n**Subdivision Type 2:** [Region](https://bliptext.com/articles/list-of-regions-of-california) \n**Subdivision Name 2:** [San Francisco Bay Area](https://bliptext.com/articles/san-francisco-bay-area) \n**Established Title:** [Incorporated](https://bliptext.com/articles/municipal-corporation) \n**Established Date:** March 25, 1853 \n**Named For:** [Rancho Arroyo de la Alameda](https://bliptext.com/articles/rancho-arroyo-de-la-alameda) (also see [Alameda Creek](https://bliptext.com/articles/alameda-creek)) \n**Seat Type:** [County seat](https://bliptext.com/articles/county-seat) \n**Seat:** [Oakland](https://bliptext.com/articles/oakland-california) \n**Parts Type:** Largest city \n**Parts:** Oakland (population) · [Fremont](https://bliptext.com/articles/fremont-california) (area) \n**Government Type:** [Council–CAO](https://bliptext.com/articles/council-manager-government) \n**Governing Body:** [Alameda County Board of Supervisors](https://bliptext.com/articles/alameda-county-board-of-supervisors) \n**Leader Title 1:** President \n**Leader Name 1:** Nate Miley \n**Leader Title 2:** Vice President \n**Leader Name 2:** David Haubert \n**Leader Title 3:** Board of Supervisors \n**Leader Name 3:** Supervisors · David Haubert · Elisa Márquez · Lena Tam · Nate Miley · Keith Carson \n**Leader Title 4:** County Administrator's Office \n**Leader Name 4:** Susan S. Muranishi \n**Unit Pref:** US \n**Area Total Sq Mi:** 821 \n**Area Land Sq Mi:** 739 \n**Area Water Sq Mi:** 82 \n**Population As Of:** 2020 \n**Population Total:** 1,682,353 \n**Pop Est As Of:** 2023 \n**Population Est:** 1,622,188 \n**Population Density Sq Mi:** auto \n**Demographics Type 2:** GDP \n**Demographics 2 Title 1:** Total \n**Demographics 2 Info 1:** $168.506 billion (2022) \n**Area Code:** [510, 341](https://bliptext.com/articles/area-codes-510-and-341), [925](https://bliptext.com/articles/area-code-925) \n**Area Code Type:** [Area codes](https://bliptext.com/articles/north-american-numbering-plan) \n**Blank Name Sec 1:** [FIPS](https://bliptext.com/articles/federal-information-processing-standard) code \n**Blank Info Sec 1:** 06-001 \n**Blank 1 Name Sec 1:** [GNIS](https://bliptext.com/articles/geographic-names-information-system) feature ID \n**Website:** ACgov.org \n**Elevation Max Ft:** 3843 \n**Timezone:** [Pacific Time Zone](https://bliptext.com/articles/pacific-time-zone) \n**Utc Offset:** 8 \n**Timezone Dst:** [Pacific Daylight Time](https://bliptext.com/articles/pacific-daylight-time) \n**Utc Offset Dst:** 7 \n**Blank Name Sec 2:** Congressional districts \n**Blank Info Sec 2:** [10th](https://bliptext.com/articles/california-s-10th-congressional-district), [12th](https://bliptext.com/articles/california-s-12th-congressional-district), [14th](https://bliptext.com/articles/california-s-14th-congressional-district), [17th](https://bliptext.com/articles/california-s-17th-congressional-district) \n:::\n\n# \n**Alameda County** is a [county](https://bliptext.com/articles/list-of-counties-in-california) located in the U.S. state of [California](https://bliptext.com/articles/california).\nAs of the [2020 census](https://bliptext.com/articles/2020-united-states-census), the population was 1,682,353, making it the 7th-most populous county in the state and [21st](https://bliptext.com/articles/list-of-the-most-populous-counties-in-the-united-states) most populous nationally.\nThe [county seat](https://bliptext.com/articles/county-seat) is [Oakland](https://bliptext.com/articles/oakland-california).\nAlameda County is in the [San Francisco Bay Area](https://bliptext.com/articles/san-francisco-bay-area), occupying much of the [East Bay](https://bliptext.com/articles/east-bay-san-francisco-bay-area) region.\nThe [Spanish](https://bliptext.com/articles/spanish-language) word alameda means either \"a grove of poplars...or a tree lined street\".\nThe name was originally used to describe the Arroyo de la Alameda; the [willow](https://bliptext.com/articles/willow) and [sycamore](https://bliptext.com/articles/sycamore) trees along the banks of the river reminded the early Spanish explorers of a road lined with trees.\nAlthough a strict translation to English might be \"Poplar Grove Creek\", the name of the principal stream that flows through the county is now simply \"[Alameda Creek](https://bliptext.com/articles/alameda-creek)\".\nAlameda County is part of the [San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area](https://bliptext.com/articles/san-francisco-oakland-berkeley-ca-metropolitan-statistical-area), and the [San Jose–San Francisco–Oakland, CA Combined Statistical Area](https://bliptext.com/articles/san-jose-san-francisco-oakland-ca-combined-statistical-area).\n\n# History\nThe county was formed on March 25, 1853, from a large portion of [Contra Costa County](https://bliptext.com/articles/contra-costa-county-california) and a smaller portion of [Santa Clara County](https://bliptext.com/articles/santa-clara-county-california).\nThe county seat at the time of the county's formation was located at [Alvarado](https://bliptext.com/articles/alvarado-california), now part of [Union City](https://bliptext.com/articles/union-city-california).\nIn 1856, it was moved to [San Leandro](https://bliptext.com/articles/san-leandro-california), where the county courthouse was destroyed by the devastating 1868 quake on the [Hayward Fault](https://bliptext.com/articles/hayward-fault).\nThe county seat was then re-established in the town of [Brooklyn](https://bliptext.com/articles/brooklyn-california) from 1872 to 1875.\nBrooklyn is now part of [Oakland](https://bliptext.com/articles/oakland-california), which has been the county seat since 1873.\nMuch of what is now an intensively [urban](https://bliptext.com/articles/urban-area) region was initially developed as a [trolley car suburb](https://bliptext.com/articles/trolley-car-suburb) of [San Francisco](https://bliptext.com/articles/san-francisco-california) in the late 19th and early 20th centuries.\nThe [Key System](https://bliptext.com/articles/key-system) moved commuters to and from the [Key System](https://bliptext.com/articles/key-system) Mole, where [ferries bridged the gap](https://bliptext.com/articles/ferries-of-san-francisco-bay) across [San Francisco Bay](https://bliptext.com/articles/san-francisco-bay).\nThe historical progression from Native American tribal lands to Spanish then Mexican ranches, then to farms, ranches, and orchards, then to multiple city centers and suburbs, is shared with the adjacent and closely associated [Contra Costa County](https://bliptext.com/articles/history-of-contra-costa-county-california).\n\n# Law, government and politics\n# [René C. Davidson Courthouse, Alameda County Superior Court, Oakland, in June 2009 | upload.wikimedia.org/wikipedia/commons/9/94/Oakland///Court///House///California///USA2.jpg]\n\n## Government\nThe [Government of Alameda County](https://bliptext.com/articles/government-of-alameda-county-california) is defined and authorized under the [California Constitution](https://bliptext.com/articles/california-constitution), [California law](https://bliptext.com/articles/california-law), and the Charter of the County of Alameda.\nMuch of the [Government of California](https://bliptext.com/articles/government-of-california) is in practice the responsibility of county governments such as the Government of Alameda County, while municipalities such as the City of [Oakland](https://bliptext.com/articles/oakland-california) and the City of [Berkeley](https://bliptext.com/articles/berkeley-california) provide additional, often non-essential services.\nThe County government provides countywide services such as elections and voter registration, law enforcement, jails, vital records, property records, tax collection, and public health.\nIn addition it is the local government for all unincorporated areas, and provides services such as law enforcement to some incorporated cities under a contract arrangement.\nIt is composed of the elected five-member [Alameda County Board of Supervisors](https://bliptext.com/articles/alameda-county-board-of-supervisors) (BOS) as the county legislature, several other elected offices and officers including the [Sheriff](https://bliptext.com/articles/alameda-county-sheriff-s-department), the [District Attorney](https://bliptext.com/articles/alameda-county-district-attorney), [Assessor](https://bliptext.com/articles/alameda-county-assessor), [Auditor-Controller/County Clerk/Recorder](https://bliptext.com/articles/alameda-county-auditor-controller-county-clerk-recorder), [Treasurer/Tax Collector](https://bliptext.com/articles/alameda-county-treasurer-tax-collector), and numerous county departments and entities under the supervision of the County Administrator.\nIn addition, several entities of the [government of California](https://bliptext.com/articles/government-of-california) have jurisdiction conterminous with Alameda County, such as the [Alameda County Superior Court](https://bliptext.com/articles/alameda-county-superior-court).\nThe current supervisors are:\nThe Board elects a president who presides at all meetings of the Board and appoints committees to handle work involving the major programs of the county.\nIf the president is absent for a meeting, the vice president shall be responsible.\nA Board election occurs every two years for these positions.\nSupervisor Carson is serving currently as president; Supervisor Miley is vice president.\nThe county's law enforcement is overseen by an elected Sheriff/Coroner and an elected District Attorney.\nThe Sheriff supervises the deputies of the [Alameda County Sheriff's Office](https://bliptext.com/articles/alameda-county-sheriff-s-office), whose primary responsibilities include policing unincorporated areas of the county and cities within the county which contract with the Sheriff's Office for police services; providing security and law enforcement for county buildings including courthouses, the county jail and other county properties; providing support resources, such as a forensics laboratory and search and rescue capabilities, to other law enforcement agencies throughout the county; and serving the process of the county's Superior Court system.\nThe District Attorney's office is responsible for prosecuting all criminal violations of the laws of the state of California, the county, or its constituent municipalities, in the Alameda County Superior Court.\nThe current Sheriff is [Yesenia Sanchez](https://bliptext.com/articles/yesenia-sanchez), who was elected in 2022, succeeding [Greg Ahern](https://bliptext.com/articles/greg-ahern), who had served in the post for 16 years.\nThe Sheriff's Office operates two jails: [Santa Rita Jail](https://bliptext.com/articles/santa-rita-jail) in [Dublin](https://bliptext.com/articles/dublin-ca), and [Glenn E. Dyer Detention Facility](https://bliptext.com/articles/glenn-e-dyer-detention-facility) in downtown [Oakland](https://bliptext.com/articles/oakland-ca).\nIn 2009, [Nancy E. O'Malley](https://bliptext.com/articles/nancy-e-o-malley) was appointed Alameda County district attorney after [Tom Orloff](https://bliptext.com/articles/tom-orloff) retired.\nShe served two terms and did not run for reelection in 2022.\n[Pamela Price](https://bliptext.com/articles/pamela-price) was elected as district attorney in 2022.\nThe Alameda County Fire Department (ACFD) was formed on July 1, 1993, as a dependent district, with the Board of Supervisors as its governing body.\nMunicipal and specialized fire departments have been consolidated into the ACFD over the years.\n1993 brought in the Castro Valley and Eden Consolidated FD, and the County Fire Patrol.\nSan Leandro joined in 1995, Dublin in 1997, [Lawrence Berkeley National Laboratory](https://bliptext.com/articles/lawrence-berkeley-national-laboratory) in 2002, [Lawrence Livermore National Laboratory](https://bliptext.com/articles/lawrence-livermore-national-laboratory) in 2007, The [Alameda County Regional Emergency Communications Center](https://bliptext.com/articles/alameda-county-regional-emergency-communications-center) in 2008, and Newark and Union City in 2010.\nEmeryville joined the ACFD in 2012.\nThe [Alameda County Water District](https://bliptext.com/articles/alameda-county-water-district) is a special district within Alameda County created to distribute water, but it is not operated by Alameda County administrators.\nIt is operated by an elected board of directors.\n[Alameda County Superior Court](https://bliptext.com/articles/alameda-county-superior-court) operates in twelve separate locations throughout the county, with its central [René C. Davidson Courthouse](https://bliptext.com/articles/ren-c-davidson-courthouse) located in Oakland near [Lake Merritt](https://bliptext.com/articles/lake-merritt).\nMost major criminal trials and complex civil cases are heard at this location or in courtrooms within the County Administration Building across the street.\n\n## State and federal representation\nIn the [California State Assembly](https://bliptext.com/articles/california-state-assembly), Alameda County is split between five districts:\nIn the [California State Senate](https://bliptext.com/articles/california-state-senate), the county is split between three districts:\nIn the [United States House of Representatives](https://bliptext.com/articles/united-states-house-of-representatives), the county is split between four districts:\n\n## Politics\nSince 1932, Alameda County has been a stronghold of the Democratic Party, with [Dwight Eisenhower](https://bliptext.com/articles/dwight-eisenhower) being the only Republican presidential nominee to have carried the county since.\nPrior to 1932, the county had been a Republican stronghold.\n[Piedmont](https://bliptext.com/articles/piedmont-california) resident [William F. Knowland](https://bliptext.com/articles/william-f-knowland) was the Republican U.S. Senate Leader from 1953 to 1959.\nEven when [Ronald Reagan](https://bliptext.com/articles/ronald-reagan) won the national popular vote by an 18.3% margin in [1984](https://bliptext.com/articles/1984-united-states-presidential-election), [Walter Mondale](https://bliptext.com/articles/walter-mondale) won Alameda County by a larger margin.\nIn [2004](https://bliptext.com/articles/2004-united-states-presidential-election) it voted for [John Kerry](https://bliptext.com/articles/john-kerry), who won over 75% of the vote.\nEvery city and town voted Democratic.\nGeorge H.W. Bush in 1988 was the last Republican to break 30% of the county's vote and Ronald Reagan in 1984 was the last to break 40% of the vote (carrying 40.01%).\nOn November 4, 2008, Alameda County voted 61.92% against [Proposition 8](https://bliptext.com/articles/california-proposition-8-2008), which won statewide, and which amended the [California Constitution](https://bliptext.com/articles/california-constitution) to ban [same-sex marriage](https://bliptext.com/articles/same-sex-marriage).\nThe county garnered the sixth highest \"no\" vote, by percentage, of all California counties, and was the second largest county, by total voter turnout, to vote against it.\n\n### Voter registration statistics as of October 24, 2022\n\n#### Cities by population and voter registration\n\n# Geography and climate\nAccording to the [U.S. Census Bureau](https://bliptext.com/articles/u-s-census-bureau), the county has a total area of 821 sqmi, of which 739 sqmi is land and 82 sqmi (10%) is water.\nThe [San Francisco Bay](https://bliptext.com/articles/san-francisco-bay) borders the county on the west.\nThe crest of the [Berkeley Hills](https://bliptext.com/articles/berkeley-hills) forms part of the northeastern boundary and reaches into the center of the county.\nA coastal plain several miles wide lines the bay; and is Oakland's most populous region.\nLivermore Valley lies in the eastern part of the county.\nAmador Valley abuts the western edge of Livermore Valley and continues west to the Pleasanton Ridge.\nThe ridges and valleys of the [Diablo Range](https://bliptext.com/articles/diablo-range), containing the county's highest peaks, cover the very sparsely populated southeast portion of the county.\nThe [Hayward Fault](https://bliptext.com/articles/hayward-fault), a major branch of the San Andreas Fault to the west, runs through the most populated parts of Alameda County, while the [Calaveras Fault](https://bliptext.com/articles/calaveras-fault) runs through the southeastern part of the county.\nThe areas near the Bay itself have a maritime [warm-summer Mediterranean climate](https://bliptext.com/articles/warm-summer-mediterranean-climate), whereas behind the mountains, summers are significantly warmer.\nThe climate charts below are for [Oakland](https://bliptext.com/articles/oakland-california) and inland [Livermore](https://bliptext.com/articles/livermore-california).\n# [View of downtown Oakland looking west across Lake Merritt | upload.wikimedia.org/wikipedia/commons/e/e3/Oaklandatnight02192006.JPG]\n# [View of Berkeley and the San Francisco Bay at nightfall | upload.wikimedia.org/wikipedia/commons/f/f8/BerkeleyAndBayAtNight.jpg]\n# [The reconstructed mission at Mission San José (located in Fremont) | upload.wikimedia.org/wikipedia/commons/d/dd/Mission-SJ.jpg]\n\n## Adjacent counties\nThe City and County of [San Francisco, California](https://bliptext.com/articles/san-francisco-california), borders the county on the west, and has a small land border with the city of [Alameda, California](https://bliptext.com/articles/alameda-california) due to land filling.\n[Santa Clara County](https://bliptext.com/articles/santa-clara-county-california) borders the county on the south.\n[San Joaquin County](https://bliptext.com/articles/san-joaquin-county-california) borders the county on the east.\n[Contra Costa County](https://bliptext.com/articles/contra-costa-county-california) borders the county on the north.\n[Stanislaus County](https://bliptext.com/articles/stanislaus-county-california) borders the county on the easternmost end of its southern boundary for 250 ft.\n\n## National protected area\n\n# Demographics\n\n## 2020 census\n\n## 2014\nA 2014 analysis by [The Atlantic](https://bliptext.com/articles/the-atlantic) found Alameda County to be the fourth most racially diverse county in the United States, in terms of closest to equal representation of each racial and ethnic group,—behind [Aleutians West Census Area](https://bliptext.com/articles/aleutians-west-census-area-alaska) and [Aleutians East Borough](https://bliptext.com/articles/aleutians-east-borough-alaska) in Alaska, and [Queens County](https://bliptext.com/articles/queens) in New York—as well as the most diverse county in California.\nThe 2020 census shows Alameda as having one of the highest Asian percentages and being the only county in the continental US, along with neighboring [Santa Clara County, California](https://bliptext.com/articles/santa-clara-county-california), to have an Asian plurality - consisting largely of Chinese, Indian and Filipino ancestry.\n# [Ethnic origins in Alameda County | upload.wikimedia.org/wikipedia/commons/1/1d/Ethnic///Origins///in///Alameda///County%2C///CA.png]\n\n## 2011\n\n### Places by population, race, and income\n\n## 2010\nThe [2010 United States Census](https://bliptext.com/articles/2010-united-states-census) reported that Alameda County had a population of 1,510,271.\nThe population density was 2,047.6 PD/sqmi.\nThe racial makeup of Alameda County was 649,122 (43.0%) [White](https://bliptext.com/articles/white-u-s-census), 190,451 (12.6%) [African American](https://bliptext.com/articles/african-american-u-s-census), 9,799 (0.6%) [Native American](https://bliptext.com/articles/native-american-u-s-census), 394,560 (26.1%) [Asian](https://bliptext.com/articles/asian-u-s-census) (9.7% Chinese, 5.5% Filipino, 4.8% Indian, 2.0% Vietnamese, 1.2% Korean, 0.8% Japanese, 2.2% Other [Asian](https://bliptext.com/articles/asian-u-s-census)), 12,802 (0.8%) [Pacific Islander](https://bliptext.com/articles/pacific-islander-u-s-census), 162,540 (10.8%) from [other races](https://bliptext.com/articles/race-united-states-census), and 90,997 (6.0%) from two or more races.\n[Hispanic](https://bliptext.com/articles/hispanic-u-s-census) or [Latino](https://bliptext.com/articles/latino-u-s-census) of any race were 339,889 persons (22.5%): 16.4% Mexican, 0.8% Puerto Rican, 0.2% Cuban, 5.1% Other [Hispanic](https://bliptext.com/articles/hispanic-u-s-census).\n\n## 2000\nAs of the [census](https://bliptext.com/articles/census) of 2000, there were 1,443,741 people, 523,366 households, out of which 32.6% had children under the age of 18 living within them, 47.0% [married couples](https://bliptext.com/articles/marriage) living together, 13.0% had a female householder with no husband present, and 35.2% were non-families.\n26.0% of all households were made up of individuals, and 7.3% had someone living alone who was 65 years of age or older.\nThe average household size was 2.71 and the average family size was 3.31.\nIn the county, the population was spread out, with 24.6% under the age of 18, 9.6% from 18 to 24, 33.9% from 25 to 44, 21.7% from 45 to 64, and 10.2% who were 65 years of age or older.\nThe median age was 34 years.\nFor every 100 females there were 96.60 males.\nFor every 100 females age 18 and over, there were 94.00 males.\nThe median income for a household in the county was $55,946, and the median income for a family was $65,857 (these figures had risen to $66,430 and $81,341 respectively as of a 2007 estimate ).\nMales had a median income of $47,425 versus $36,921 for females.\nThe [per capita income](https://bliptext.com/articles/per-capita-income) for the county was $26,680.\nAbout 7.7% of families and 11.0% of the population were below the [poverty line](https://bliptext.com/articles/poverty-line), including 13.5% of those under age 18 and 8.1% of those age 65 or over.\nIn 2000, the largest denominational group was the [Catholics](https://bliptext.com/articles/catholic) (with 306,437 adherents).\nThe largest religious bodies were the [Catholic Church](https://bliptext.com/articles/catholic-church) (with 306,437 members) and [Judaism](https://bliptext.com/articles/judaism) (with 32,500 members).\n\n## 2019 United States Census Bureau American Community Survey estimates\nAccording to 2019 US Census Bureau estimates, Alameda County's population was 38.8% [White](https://bliptext.com/articles/white-american) (30.4% Non-Hispanic [White](https://bliptext.com/articles/white-american) and 8.4% Hispanic [White](https://bliptext.com/articles/white-american)), 10.7% Black or [African American](https://bliptext.com/articles/african-american), 31.1% [Asian](https://bliptext.com/articles/asian-american), 11.5% Some Other Race, 0.8% [Native American](https://bliptext.com/articles/native-americans-in-the-united-states) and [Alaskan Native](https://bliptext.com/articles/alaskan-native), 0.8% [Pacific Islander](https://bliptext.com/articles/pacific-islander) and 6.4% from [two or more races](https://bliptext.com/articles/multiracial-american).\nThe White population continues to remain the largest racial category in Alameda County and includes the 37.7% of Hispanics who self-identify as White.\nThe remainder of Hispanics self-identify as Other Race (49.2%), Multiracial (8.7%), American Indian and Alaskan Native (1.9%), Black (1.5%), Asian (0.9%), and Hawaiian and Pacific Islander (0.2%).\nThe Black population continues to decline and at 10.7% (including [Black Hispanics](https://bliptext.com/articles/black-hispanics)) is below the national average of 12.8% (including [Black Hispanics](https://bliptext.com/articles/black-hispanics)).\nThe Black population peaked in the 1980 Census at 18.4%.\nAlameda county has the 2nd highest percentage of Black residents in California after [Solano County](https://bliptext.com/articles/solano-county) at 13.4%.\nIf Hispanics are treated as a separate category from race, Alameda County's population was 30.4% [White](https://bliptext.com/articles/white-american), 30.9% [Asian](https://bliptext.com/articles/asian-american), 22.3% [Hispanic-Latino](https://bliptext.com/articles/hispanic-and-latino-americans), 10.3% Black or [African American](https://bliptext.com/articles/african-american), 0.5% Some Other Race, 0.3% [Native American](https://bliptext.com/articles/native-americans-in-the-united-states) and [Alaskan Native](https://bliptext.com/articles/alaskan-native), 0.8% [Pacific Islander](https://bliptext.com/articles/pacific-islander) and 4.4% from [two or more races](https://bliptext.com/articles/multiracial-american).\nAsian Americans are now the largest racial/ethnic group at 30.9% (excluding Asian Hispanics).\nWhite Non-Hispanic Americans are the largest minority group at 30.4% of the population.\nBy ethnicity, 22.3% of the total population is [Hispanic-Latino](https://bliptext.com/articles/hispanic-and-latino-americans) (of any race) and 77.7% is Non-Hispanic (of any race).\nIf treated as a category separate from race, Hispanics are the third largest minority group in Alameda County.\nThe largest ancestry group of Hispanics in Alameda County (2018) are of [Mexican](https://bliptext.com/articles/mexican-american) descent (72.9% of Hispanics) followed by [Salvadoran](https://bliptext.com/articles/salvadoran-americans) descent (5.5% of Hispanics), [Guatemalan](https://bliptext.com/articles/guatemalan-american) descent (3.9%), [Puerto Rican](https://bliptext.com/articles/puerto-ricans) descent (3.4%), [Spaniard](https://bliptext.com/articles/spanish-americans) descent (2.0%), [Nicaraguan](https://bliptext.com/articles/nicaraguan-americans) descent (1.7%), [Peruvian](https://bliptext.com/articles/peruvian-americans) descent (1.4%), [Cuban](https://bliptext.com/articles/cuban-americans) descent (1.2%), [Colombian](https://bliptext.com/articles/colombian-americans) descent (1.1%), and those of other Hispanic ethnicity or of mixed Hispanic ethnicity (6.9%).\n\n# Crime\nThe following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense.\n\n## Cities by population and crime rates\n\n# Education\nThe [Alameda County Office of Education](https://bliptext.com/articles/alameda-county-office-of-education) oversees seventeen K–12 school districts and one K–8 district in Alameda County.\nIn all, there are approximately 10,000 teachers serving 225,000 students.\nThe ACOE also services three community college districts with a total enrollment of approximately 55,000 students.\nThe [Alameda County Library](https://bliptext.com/articles/alameda-county-library) operates libraries in the cities of [Albany](https://bliptext.com/articles/albany-california), [Dublin](https://bliptext.com/articles/dublin-california), [Fremont](https://bliptext.com/articles/fremont-california), [Newark](https://bliptext.com/articles/newark-california) and [Union City](https://bliptext.com/articles/union-city-california) and the unincorporated communities of [Castro Valley](https://bliptext.com/articles/castro-valley-california) and [San Lorenzo](https://bliptext.com/articles/san-lorenzo-california).\nThe cities of Alameda, Berkeley, Hayward, Livermore, Oakland, San Leandro, and Pleasanton have their own library systems.\n\n## Colleges and universities\nAlameda County is home to the [University of California, Berkeley](https://bliptext.com/articles/university-of-california-berkeley), the flagship campus of the [University of California](https://bliptext.com/articles/university-of-california) system, and one of the largest and most prestigious research universities in the world.\nOther colleges and universities located within Alameda county include:\nOther local colleges and universities which have now closed include:\n\n## Public schools\nK–12 unified school districts:\nOthers:\n\n# Arts\nThe [Alameda County Arts Commission](https://bliptext.com/articles/alameda-county-arts-commission), a division of the county administration, under the [California Arts Council](https://bliptext.com/articles/california-arts-council), was created in 1965.\nIts fifteen appointed members act in an advisory capacity to the board of supervisors, in promoting the arts.\nThe [Oakland Museum of California](https://bliptext.com/articles/oakland-museum-of-california) has a substantial collection of California art works and historical artifacts.\n\n# Sports\nThe following sports teams play in Alameda County:\n\n# Events\nThe annual county fair is held at the [Alameda County Fairgrounds](https://bliptext.com/articles/alameda-county-fairgrounds) in [Pleasanton](https://bliptext.com/articles/pleasanton-california).\nThe fair runs for four weekends from June to July.\nAttractions include horse racing, carnival rides, [4-H](https://bliptext.com/articles/4-h) exhibits, and live bands.\n\n# Parks and recreation\nThere are more than 350 parks located within the county.\nThe [East Bay Regional Park District](https://bliptext.com/articles/east-bay-regional-park-district) operates within Alameda and neighboring Contra Costa County, with numerous parks within the county, including [Tilden Regional Park](https://bliptext.com/articles/tilden-regional-park), [Redwood Regional Park](https://bliptext.com/articles/redwood-regional-park), [Anthony Chabot Regional Park](https://bliptext.com/articles/anthony-chabot-regional-park), [Coyote Hills Regional Park](https://bliptext.com/articles/coyote-hills-regional-park), [Ardenwood Historic Farm](https://bliptext.com/articles/ardenwood-historic-farm), [Pleasanton Ridge Regional Park](https://bliptext.com/articles/pleasanton-ridge-regional-park) and [Vargas Plateau Regional Park](https://bliptext.com/articles/vargas-plateau-regional-park).\n[Eastshore State Park](https://bliptext.com/articles/eastshore-state-park) is located partially along the bay shore of northern Alameda County.\nThe [San Francisco Bay Trail](https://bliptext.com/articles/san-francisco-bay-trail), a project of the [Association of Bay Area Governments](https://bliptext.com/articles/association-of-bay-area-governments), will run along the bay shore of the county.\nThe [Hayward Area Recreation and Park District](https://bliptext.com/articles/hayward-area-recreation-and-park-district) is the largest special park district in California.\n\n# Transportation\n\n## Major highways\n\n## Mass transit\n\n### Rail\n\n### Bus\n\n### Ferry\n\n## Airports\nThe main airport is the [San Francisco Bay Oakland International Airport](https://bliptext.com/articles/san-francisco-bay-oakland-international-airport), with two [general aviation](https://bliptext.com/articles/general-aviation) airports, the [Hayward Executive Airport](https://bliptext.com/articles/hayward-executive-airport) and [Livermore Municipal Airport](https://bliptext.com/articles/livermore-municipal-airport).\n\n# Services\n[Alameda Health System](https://bliptext.com/articles/alameda-health-system) operates the public health system in Alameda County.\nIt operates five hospitals ([Alameda Hospital](https://bliptext.com/articles/alameda-hospital), Fairmont Hospital, [Highland Hospital](https://bliptext.com/articles/highland-hospital-oakland-california), John George Psychiatric Hospital, and San Leandro Hospital), and four primary care medical clinics (called ambulatory wellness centers) within the county.\nThe [Alameda County Community Food Bank](https://bliptext.com/articles/alameda-county-community-food-bank) nonprofit provides [food bank](https://bliptext.com/articles/food-bank) resources to residents.\nThe Family Emergency Shelter Coalition coordinates services for homeless families.\n\n# Landmarks\nAlameda County has eight [National Historic Landmarks](https://bliptext.com/articles/national-historic-landmarks): [The Abbey, Joaquin Miller House](https://bliptext.com/articles/joaquin-miller-house), [First Church of Christ, Scientist](https://bliptext.com/articles/first-church-of-christ-scientist-berkeley-california), USS Hornet (CVS-12) (aircraft carrier), [Lake Merritt Wild Duck Refuge](https://bliptext.com/articles/lake-merritt), Lightship WAL-605, Relief, [Paramount Theatre](https://bliptext.com/articles/paramount-theater-oakland-california), Potomac (Presidential yacht), and [Room 307, Gilman Hall, University of California](https://bliptext.com/articles/gilman-hall).\nThe county has a large [number of National Historic Places](https://bliptext.com/articles/national-register-of-historic-places-listings-in-alameda-county-california), as well as [a number of California Historical Landmarks](https://bliptext.com/articles/california-historical-landmarks-in-alameda-county-california).\n\n# Sister county\nAlameda has a [sister county](https://bliptext.com/articles/sister-city): [Taoyuan County, Taiwan](https://bliptext.com/articles/taoyuan-city) (now Taoyuan City).\n\n# Communities\n# [Cities and census designated places of Alameda County | upload.wikimedia.org/wikipedia/commons/9/9c/Alameda///County///California///Incorporated///and///Unincorporated///areas///annotated.svg]\n\n## Cities\n\n## Census-designated places\n

[Ashland](https://bliptext.com/articles/ashland-california)

[Castro Valley](https://bliptext.com/articles/castro-valley-california)

[Cherryland](https://bliptext.com/articles/cherryland-california)

[Fairview](https://bliptext.com/articles/fairview-california)

[San Lorenzo](https://bliptext.com/articles/san-lorenzo-california)

[Sunol](https://bliptext.com/articles/sunol-california)

\n\n\n## Unincorporated communities\n\n## Former townships\n# [Map of Alameda County, 1878 (Six Townships) | upload.wikimedia.org/wikipedia/commons/8/8e/Map///of///Alameda///County///1878///LARGE.jpg]\n\n## Population ranking\nThe population ranking of the following table is based on the [2020 census](https://bliptext.com/articles/2020-united-states-census) of Alameda County.\n**†** county seat\n\n# People","current_revision":null,"created_by":"kACnuQmH5k9Nr5VNVEpVeg7XpvUmMctD","created_at":"2025-01-25T17:47:59.805Z","updated_at":"2025-01-25T17:47:59.805Z","search_vector":"'alameda':1 'california':3 'counti':2","search_content":" \n**Name:** Alameda County \n**Settlement Type:** [County](https://bliptext.com/articles/list-of-counties-in-california) \n**Image Flag:** Flag of Alameda County, California.svg \n**Image Seal:** Seal of Alameda County, California.svg \n**Map Caption:** Interactive map of Alameda County \n**Image Map 1:** Map of California highlighting Alameda County.svg \n**Mapsize 1:** 200px \n**Map Caption 1:** Location in the state of California \n**Subdivision Type:** Country \n**Subdivision Name:** United States \n**Subdivision Type 1:** [State](https://bliptext.com/articles/u-s-state) \n**Subdivision Name 1:** [California](https://bliptext.com/articles/california) \n**Subdivision Type 2:** [Region](https://bliptext.com/articles/list-of-regions-of-california) \n**Subdivision Name 2:** [San Francisco Bay Area](https://bliptext.com/articles/san-francisco-bay-area) \n**Established Title:** [Incorporated](https://bliptext.com/articles/municipal-corporation) \n**Established Date:** March 25, 1853 \n**Named For:** [Rancho Arroyo de la Alameda](https://bliptext.com/articles/rancho-arroyo-de-la-alameda) (also see [Alameda Creek](https://bliptext.com/articles/alameda-creek)) \n**Seat Type:** [County seat](https://bliptext.com/articles/county-seat) \n**Seat:** [Oakland](https://bliptext.com/articles/oakland-california) \n**Parts Type:** Largest city \n**Parts:** Oakland (population) · [Fremont](https://bliptext.com/articles/fremont-california) (area) \n**Government Type:** [Council–CAO](https://bliptext.com/articles/council-manager-government) \n**Governing Body:** [Alameda County Board of Supervisors](https://bliptext.com/articles/alameda-county-board-of-supervisors) \n**Leader Title 1:** President \n**Leader Name 1:** Nate Miley \n**Leader Title 2:** Vice President \n**Leader Name 2:** David Haubert \n**Leader Title 3:** Board of Supervisors \n**Leader Name 3:** Supervisors · David Haubert · Elisa Márquez · Lena Tam · Nate Miley · Keith Carson \n**Leader Title 4:** County Administrator's Office \n**Leader Name 4:** Susan S. Muranishi \n**Unit Pref:** US \n**Area Total Sq Mi:** 821 \n**Area Land Sq Mi:** 739 \n**Area Water Sq Mi:** 82 \n**Population As Of:** 2020 \n**Population Total:** 1,682,353 \n**Pop Est As Of:** 2023 \n**Population Est:** 1,622,188 \n**Population Density Sq Mi:** auto \n**Demographics Type 2:** GDP \n**Demographics 2 Title 1:** Total \n**Demographics 2 Info 1:** $168.506 billion (2022) \n**Area Code:** [510, 341](https://bliptext.com/articles/area-codes-510-and-341), [925](https://bliptext.com/articles/area-code-925) \n**Area Code Type:** [Area codes](https://bliptext.com/articles/north-american-numbering-plan) \n**Blank Name Sec 1:** [FIPS](https://bliptext.com/articles/federal-information-processing-standard) code \n**Blank Info Sec 1:** 06-001 \n**Blank 1 Name Sec 1:** [GNIS](https://bliptext.com/articles/geographic-names-information-system) feature ID \n**Website:** ACgov.org \n**Elevation Max Ft:** 3843 \n**Timezone:** [Pacific Time Zone](https://bliptext.com/articles/pacific-time-zone) \n**Utc Offset:** 8 \n**Timezone Dst:** [Pacific Daylight Time](https://bliptext.com/articles/pacific-daylight-time) \n**Utc Offset Dst:** 7 \n**Blank Name Sec 2:** Congressional districts \n**Blank Info Sec 2:** [10th](https://bliptext.com/articles/california-s-10th-congressional-district), [12th](https://bliptext.com/articles/california-s-12th-congressional-district), [14th](https://bliptext.com/articles/california-s-14th-congressional-district), [17th](https://bliptext.com/articles/california-s-17th-congressional-district) \n \n\n# \n**Alameda County** is a [county](https://bliptext.com/articles/list-of-counties-in-california) located in the U.S. state of [California](https://bliptext.com/articles/california).\nAs of the [2020 census](https://bliptext.com/articles/2020-united-states-census), the population was 1,682,353, making it the 7th-most populous county in the state and [21st](https://bliptext.com/articles/list-of-the-most-populous-counties-in-the-united-states) most populous nationally.\nThe [county seat](https://bliptext.com/articles/county-seat) is [Oakland](https://bliptext.com/articles/oakland-california).\nAlameda County is in the [San Francisco Bay Area](https://bliptext.com/articles/san-francisco-bay-area), occupying much of the [East Bay](https://bliptext.com/articles/east-bay-san-francisco-bay-area) region.\nThe [Spanish](https://bliptext.com/articles/spanish-language) word alameda means either \"a grove of poplars...or a tree lined street\".\nThe name was originally used to describe the Arroyo de la Alameda; the [willow](https://bliptext.com/articles/willow) and [sycamore](https://bliptext.com/articles/sycamore) trees along the banks of the river reminded the early Spanish explorers of a road lined with trees.\nAlthough a strict translation to English might be \"Poplar Grove Creek\", the name of the principal stream that flows through the county is now simply \"[Alameda Creek](https://bliptext.com/articles/alameda-creek)\".\nAlameda County is part of the [San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area](https://bliptext.com/articles/san-francisco-oakland-berkeley-ca-metropolitan-statistical-area), and the [San Jose–San Francisco–Oakland, CA Combined Statistical Area](https://bliptext.com/articles/san-jose-san-francisco-oakland-ca-combined-statistical-area).\n\n# History\nThe county was formed on March 25, 1853, from a large portion of [Contra Costa County](https://bliptext.com/articles/contra-costa-county-california) and a smaller portion of [Santa Clara County](https://bliptext.com/articles/santa-clara-county-california).\nThe county seat at the time of the county's formation was located at [Alvarado](https://bliptext.com/articles/alvarado-california), now part of [Union City](https://bliptext.com/articles/union-city-california).\nIn 1856, it was moved to [San Leandro](https://bliptext.com/articles/san-leandro-california), where the county courthouse was destroyed by the devastating 1868 quake on the [Hayward Fault](https://bliptext.com/articles/hayward-fault).\nThe county seat was then re-established in the town of [Brooklyn](https://bliptext.com/articles/brooklyn-california) from 1872 to 1875.\nBrooklyn is now part of [Oakland](https://bliptext.com/articles/oakland-california), which has been the county seat since 1873.\nMuch of what is now an intensively [urban](https://bliptext.com/articles/urban-area) region was initially developed as a [trolley car suburb](https://bliptext.com/articles/trolley-car-suburb) of [San Francisco](https://bliptext.com/articles/san-francisco-california) in the late 19th and early 20th centuries.\nThe [Key System](https://bliptext.com/articles/key-system) moved commuters to and from the [Key System](https://bliptext.com/articles/key-system) Mole, where [ferries bridged the gap](https://bliptext.com/articles/ferries-of-san-francisco-bay) across [San Francisco Bay](https://bliptext.com/articles/san-francisco-bay).\nThe historical progression from Native American tribal lands to Spanish then Mexican ranches, then to farms, ranches, and orchards, then to multiple city centers and suburbs, is shared with the adjacent and closely associated [Contra Costa County](https://bliptext.com/articles/history-of-contra-costa-county-california).\n\n# Law, government and politics\n# [René C. Davidson Courthouse, Alameda County Superior Court, Oakland, in June 2009 | upload.wikimedia.org/wikipedia/commons/9/94/Oakland///Court///House///California///USA2.jpg]\n\n## Government\nThe [Government of Alameda County](https://bliptext.com/articles/government-of-alameda-county-california) is defined and authorized under the [California Constitution](https://bliptext.com/articles/california-constitution), [California law](https://bliptext.com/articles/california-law), and the Charter of the County of Alameda.\nMuch of the [Government of California](https://bliptext.com/articles/government-of-california) is in practice the responsibility of county governments such as the Government of Alameda County, while municipalities such as the City of [Oakland](https://bliptext.com/articles/oakland-california) and the City of [Berkeley](https://bliptext.com/articles/berkeley-california) provide additional, often non-essential services.\nThe County government provides countywide services such as elections and voter registration, law enforcement, jails, vital records, property records, tax collection, and public health.\nIn addition it is the local government for all unincorporated areas, and provides services such as law enforcement to some incorporated cities under a contract arrangement.\nIt is composed of the elected five-member [Alameda County Board of Supervisors](https://bliptext.com/articles/alameda-county-board-of-supervisors) (BOS) as the county legislature, several other elected offices and officers including the [Sheriff](https://bliptext.com/articles/alameda-county-sheriff-s-department), the [District Attorney](https://bliptext.com/articles/alameda-county-district-attorney), [Assessor](https://bliptext.com/articles/alameda-county-assessor), [Auditor-Controller/County Clerk/Recorder](https://bliptext.com/articles/alameda-county-auditor-controller-county-clerk-recorder), [Treasurer/Tax Collector](https://bliptext.com/articles/alameda-county-treasurer-tax-collector), and numerous county departments and entities under the supervision of the County Administrator.\nIn addition, several entities of the [government of California](https://bliptext.com/articles/government-of-california) have jurisdiction conterminous with Alameda County, such as the [Alameda County Superior Court](https://bliptext.com/articles/alameda-county-superior-court).\nThe current supervisors are:\nThe Board elects a president who presides at all meetings of the Board and appoints committees to handle work involving the major programs of the county.\nIf the president is absent for a meeting, the vice president shall be responsible.\nA Board election occurs every two years for these positions.\nSupervisor Carson is serving currently as president; Supervisor Miley is vice president.\nThe county's law enforcement is overseen by an elected Sheriff/Coroner and an elected District Attorney.\nThe Sheriff supervises the deputies of the [Alameda County Sheriff's Office](https://bliptext.com/articles/alameda-county-sheriff-s-office), whose primary responsibilities include policing unincorporated areas of the county and cities within the county which contract with the Sheriff's Office for police services; providing security and law enforcement for county buildings including courthouses, the county jail and other county properties; providing support resources, such as a forensics laboratory and search and rescue capabilities, to other law enforcement agencies throughout the county; and serving the process of the county's Superior Court system.\nThe District Attorney's office is responsible for prosecuting all criminal violations of the laws of the state of California, the county, or its constituent municipalities, in the Alameda County Superior Court.\nThe current Sheriff is [Yesenia Sanchez](https://bliptext.com/articles/yesenia-sanchez), who was elected in 2022, succeeding [Greg Ahern](https://bliptext.com/articles/greg-ahern), who had served in the post for 16 years.\nThe Sheriff's Office operates two jails: [Santa Rita Jail](https://bliptext.com/articles/santa-rita-jail) in [Dublin](https://bliptext.com/articles/dublin-ca), and [Glenn E. Dyer Detention Facility](https://bliptext.com/articles/glenn-e-dyer-detention-facility) in downtown [Oakland](https://bliptext.com/articles/oakland-ca).\nIn 2009, [Nancy E. O'Malley](https://bliptext.com/articles/nancy-e-o-malley) was appointed Alameda County district attorney after [Tom Orloff](https://bliptext.com/articles/tom-orloff) retired.\nShe served two terms and did not run for reelection in 2022.\n[Pamela Price](https://bliptext.com/articles/pamela-price) was elected as district attorney in 2022.\nThe Alameda County Fire Department (ACFD) was formed on July 1, 1993, as a dependent district, with the Board of Supervisors as its governing body.\nMunicipal and specialized fire departments have been consolidated into the ACFD over the years.\n1993 brought in the Castro Valley and Eden Consolidated FD, and the County Fire Patrol.\nSan Leandro joined in 1995, Dublin in 1997, [Lawrence Berkeley National Laboratory](https://bliptext.com/articles/lawrence-berkeley-national-laboratory) in 2002, [Lawrence Livermore National Laboratory](https://bliptext.com/articles/lawrence-livermore-national-laboratory) in 2007, The [Alameda County Regional Emergency Communications Center](https://bliptext.com/articles/alameda-county-regional-emergency-communications-center) in 2008, and Newark and Union City in 2010.\nEmeryville joined the ACFD in 2012.\nThe [Alameda County Water District](https://bliptext.com/articles/alameda-county-water-district) is a special district within Alameda County created to distribute water, but it is not operated by Alameda County administrators.\nIt is operated by an elected board of directors.\n[Alameda County Superior Court](https://bliptext.com/articles/alameda-county-superior-court) operates in twelve separate locations throughout the county, with its central [René C. Davidson Courthouse](https://bliptext.com/articles/ren-c-davidson-courthouse) located in Oakland near [Lake Merritt](https://bliptext.com/articles/lake-merritt).\nMost major criminal trials and complex civil cases are heard at this location or in courtrooms within the County Administration Building across the street.\n\n## State and federal representation\nIn the [California State Assembly](https://bliptext.com/articles/california-state-assembly), Alameda County is split between five districts:\nIn the [California State Senate](https://bliptext.com/articles/california-state-senate), the county is split between three districts:\nIn the [United States House of Representatives](https://bliptext.com/articles/united-states-house-of-representatives), the county is split between four districts:\n\n## Politics\nSince 1932, Alameda County has been a stronghold of the Democratic Party, with [Dwight Eisenhower](https://bliptext.com/articles/dwight-eisenhower) being the only Republican presidential nominee to have carried the county since.\nPrior to 1932, the county had been a Republican stronghold.\n[Piedmont](https://bliptext.com/articles/piedmont-california) resident [William F. Knowland](https://bliptext.com/articles/william-f-knowland) was the Republican U.S. Senate Leader from 1953 to 1959.\nEven when [Ronald Reagan](https://bliptext.com/articles/ronald-reagan) won the national popular vote by an 18.3% margin in [1984](https://bliptext.com/articles/1984-united-states-presidential-election), [Walter Mondale](https://bliptext.com/articles/walter-mondale) won Alameda County by a larger margin.\nIn [2004](https://bliptext.com/articles/2004-united-states-presidential-election) it voted for [John Kerry](https://bliptext.com/articles/john-kerry), who won over 75% of the vote.\nEvery city and town voted Democratic.\nGeorge H.W. Bush in 1988 was the last Republican to break 30% of the county's vote and Ronald Reagan in 1984 was the last to break 40% of the vote (carrying 40.01%).\nOn November 4, 2008, Alameda County voted 61.92% against [Proposition 8](https://bliptext.com/articles/california-proposition-8-2008), which won statewide, and which amended the [California Constitution](https://bliptext.com/articles/california-constitution) to ban [same-sex marriage](https://bliptext.com/articles/same-sex-marriage).\nThe county garnered the sixth highest \"no\" vote, by percentage, of all California counties, and was the second largest county, by total voter turnout, to vote against it.\n\n### Voter registration statistics as of October 24, 2022\n\n#### Cities by population and voter registration\n\n# Geography and climate\nAccording to the [U.S. Census Bureau](https://bliptext.com/articles/u-s-census-bureau), the county has a total area of 821 sqmi, of which 739 sqmi is land and 82 sqmi (10%) is water.\nThe [San Francisco Bay](https://bliptext.com/articles/san-francisco-bay) borders the county on the west.\nThe crest of the [Berkeley Hills](https://bliptext.com/articles/berkeley-hills) forms part of the northeastern boundary and reaches into the center of the county.\nA coastal plain several miles wide lines the bay; and is Oakland's most populous region.\nLivermore Valley lies in the eastern part of the county.\nAmador Valley abuts the western edge of Livermore Valley and continues west to the Pleasanton Ridge.\nThe ridges and valleys of the [Diablo Range](https://bliptext.com/articles/diablo-range), containing the county's highest peaks, cover the very sparsely populated southeast portion of the county.\nThe [Hayward Fault](https://bliptext.com/articles/hayward-fault), a major branch of the San Andreas Fault to the west, runs through the most populated parts of Alameda County, while the [Calaveras Fault](https://bliptext.com/articles/calaveras-fault) runs through the southeastern part of the county.\nThe areas near the Bay itself have a maritime [warm-summer Mediterranean climate](https://bliptext.com/articles/warm-summer-mediterranean-climate), whereas behind the mountains, summers are significantly warmer.\nThe climate charts below are for [Oakland](https://bliptext.com/articles/oakland-california) and inland [Livermore](https://bliptext.com/articles/livermore-california).\n# [View of downtown Oakland looking west across Lake Merritt | upload.wikimedia.org/wikipedia/commons/e/e3/Oaklandatnight02192006.JPG]\n# [View of Berkeley and the San Francisco Bay at nightfall | upload.wikimedia.org/wikipedia/commons/f/f8/BerkeleyAndBayAtNight.jpg]\n# [The reconstructed mission at Mission San José (located in Fremont) | upload.wikimedia.org/wikipedia/commons/d/dd/Mission-SJ.jpg]\n\n## Adjacent counties\nThe City and County of [San Francisco, California](https://bliptext.com/articles/san-francisco-california), borders the county on the west, and has a small land border with the city of [Alameda, California](https://bliptext.com/articles/alameda-california) due to land filling.\n[Santa Clara County](https://bliptext.com/articles/santa-clara-county-california) borders the county on the south.\n[San Joaquin County](https://bliptext.com/articles/san-joaquin-county-california) borders the county on the east.\n[Contra Costa County](https://bliptext.com/articles/contra-costa-county-california) borders the county on the north.\n[Stanislaus County](https://bliptext.com/articles/stanislaus-county-california) borders the county on the easternmost end of its southern boundary for 250 ft.\n\n## National protected area\n\n# Demographics\n\n## 2020 census\n\n## 2014\nA 2014 analysis by [The Atlantic](https://bliptext.com/articles/the-atlantic) found Alameda County to be the fourth most racially diverse county in the United States, in terms of closest to equal representation of each racial and ethnic group,—behind [Aleutians West Census Area](https://bliptext.com/articles/aleutians-west-census-area-alaska) and [Aleutians East Borough](https://bliptext.com/articles/aleutians-east-borough-alaska) in Alaska, and [Queens County](https://bliptext.com/articles/queens) in New York—as well as the most diverse county in California.\nThe 2020 census shows Alameda as having one of the highest Asian percentages and being the only county in the continental US, along with neighboring [Santa Clara County, California](https://bliptext.com/articles/santa-clara-county-california), to have an Asian plurality - consisting largely of Chinese, Indian and Filipino ancestry.\n# [Ethnic origins in Alameda County | upload.wikimedia.org/wikipedia/commons/1/1d/Ethnic///Origins///in///Alameda///County%2C///CA.png]\n\n## 2011\n\n### Places by population, race, and income\n\n## 2010\nThe [2010 United States Census](https://bliptext.com/articles/2010-united-states-census) reported that Alameda County had a population of 1,510,271.\nThe population density was 2,047.6 PD/sqmi.\nThe racial makeup of Alameda County was 649,122 (43.0%) [White](https://bliptext.com/articles/white-u-s-census), 190,451 (12.6%) [African American](https://bliptext.com/articles/african-american-u-s-census), 9,799 (0.6%) [Native American](https://bliptext.com/articles/native-american-u-s-census), 394,560 (26.1%) [Asian](https://bliptext.com/articles/asian-u-s-census) (9.7% Chinese, 5.5% Filipino, 4.8% Indian, 2.0% Vietnamese, 1.2% Korean, 0.8% Japanese, 2.2% Other [Asian](https://bliptext.com/articles/asian-u-s-census)), 12,802 (0.8%) [Pacific Islander](https://bliptext.com/articles/pacific-islander-u-s-census), 162,540 (10.8%) from [other races](https://bliptext.com/articles/race-united-states-census), and 90,997 (6.0%) from two or more races.\n[Hispanic](https://bliptext.com/articles/hispanic-u-s-census) or [Latino](https://bliptext.com/articles/latino-u-s-census) of any race were 339,889 persons (22.5%): 16.4% Mexican, 0.8% Puerto Rican, 0.2% Cuban, 5.1% Other [Hispanic](https://bliptext.com/articles/hispanic-u-s-census).\n\n## 2000\nAs of the [census](https://bliptext.com/articles/census) of 2000, there were 1,443,741 people, 523,366 households, out of which 32.6% had children under the age of 18 living within them, 47.0% [married couples](https://bliptext.com/articles/marriage) living together, 13.0% had a female householder with no husband present, and 35.2% were non-families.\n26.0% of all households were made up of individuals, and 7.3% had someone living alone who was 65 years of age or older.\nThe average household size was 2.71 and the average family size was 3.31.\nIn the county, the population was spread out, with 24.6% under the age of 18, 9.6% from 18 to 24, 33.9% from 25 to 44, 21.7% from 45 to 64, and 10.2% who were 65 years of age or older.\nThe median age was 34 years.\nFor every 100 females there were 96.60 males.\nFor every 100 females age 18 and over, there were 94.00 males.\nThe median income for a household in the county was $55,946, and the median income for a family was $65,857 (these figures had risen to $66,430 and $81,341 respectively as of a 2007 estimate ).\nMales had a median income of $47,425 versus $36,921 for females.\nThe [per capita income](https://bliptext.com/articles/per-capita-income) for the county was $26,680.\nAbout 7.7% of families and 11.0% of the population were below the [poverty line](https://bliptext.com/articles/poverty-line), including 13.5% of those under age 18 and 8.1% of those age 65 or over.\nIn 2000, the largest denominational group was the [Catholics](https://bliptext.com/articles/catholic) (with 306,437 adherents).\nThe largest religious bodies were the [Catholic Church](https://bliptext.com/articles/catholic-church) (with 306,437 members) and [Judaism](https://bliptext.com/articles/judaism) (with 32,500 members).\n\n## 2019 United States Census Bureau American Community Survey estimates\nAccording to 2019 US Census Bureau estimates, Alameda County's population was 38.8% [White](https://bliptext.com/articles/white-american) (30.4% Non-Hispanic [White](https://bliptext.com/articles/white-american) and 8.4% Hispanic [White](https://bliptext.com/articles/white-american)), 10.7% Black or [African American](https://bliptext.com/articles/african-american), 31.1% [Asian](https://bliptext.com/articles/asian-american), 11.5% Some Other Race, 0.8% [Native American](https://bliptext.com/articles/native-americans-in-the-united-states) and [Alaskan Native](https://bliptext.com/articles/alaskan-native), 0.8% [Pacific Islander](https://bliptext.com/articles/pacific-islander) and 6.4% from [two or more races](https://bliptext.com/articles/multiracial-american).\nThe White population continues to remain the largest racial category in Alameda County and includes the 37.7% of Hispanics who self-identify as White.\nThe remainder of Hispanics self-identify as Other Race (49.2%), Multiracial (8.7%), American Indian and Alaskan Native (1.9%), Black (1.5%), Asian (0.9%), and Hawaiian and Pacific Islander (0.2%).\nThe Black population continues to decline and at 10.7% (including [Black Hispanics](https://bliptext.com/articles/black-hispanics)) is below the national average of 12.8% (including [Black Hispanics](https://bliptext.com/articles/black-hispanics)).\nThe Black population peaked in the 1980 Census at 18.4%.\nAlameda county has the 2nd highest percentage of Black residents in California after [Solano County](https://bliptext.com/articles/solano-county) at 13.4%.\nIf Hispanics are treated as a separate category from race, Alameda County's population was 30.4% [White](https://bliptext.com/articles/white-american), 30.9% [Asian](https://bliptext.com/articles/asian-american), 22.3% [Hispanic-Latino](https://bliptext.com/articles/hispanic-and-latino-americans), 10.3% Black or [African American](https://bliptext.com/articles/african-american), 0.5% Some Other Race, 0.3% [Native American](https://bliptext.com/articles/native-americans-in-the-united-states) and [Alaskan Native](https://bliptext.com/articles/alaskan-native), 0.8% [Pacific Islander](https://bliptext.com/articles/pacific-islander) and 4.4% from [two or more races](https://bliptext.com/articles/multiracial-american).\nAsian Americans are now the largest racial/ethnic group at 30.9% (excluding Asian Hispanics).\nWhite Non-Hispanic Americans are the largest minority group at 30.4% of the population.\nBy ethnicity, 22.3% of the total population is [Hispanic-Latino](https://bliptext.com/articles/hispanic-and-latino-americans) (of any race) and 77.7% is Non-Hispanic (of any race).\nIf treated as a category separate from race, Hispanics are the third largest minority group in Alameda County.\nThe largest ancestry group of Hispanics in Alameda County (2018) are of [Mexican](https://bliptext.com/articles/mexican-american) descent (72.9% of Hispanics) followed by [Salvadoran](https://bliptext.com/articles/salvadoran-americans) descent (5.5% of Hispanics), [Guatemalan](https://bliptext.com/articles/guatemalan-american) descent (3.9%), [Puerto Rican](https://bliptext.com/articles/puerto-ricans) descent (3.4%), [Spaniard](https://bliptext.com/articles/spanish-americans) descent (2.0%), [Nicaraguan](https://bliptext.com/articles/nicaraguan-americans) descent (1.7%), [Peruvian](https://bliptext.com/articles/peruvian-americans) descent (1.4%), [Cuban](https://bliptext.com/articles/cuban-americans) descent (1.2%), [Colombian](https://bliptext.com/articles/colombian-americans) descent (1.1%), and those of other Hispanic ethnicity or of mixed Hispanic ethnicity (6.9%).\n\n# Crime\nThe following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense.\n\n## Cities by population and crime rates\n\n# Education\nThe [Alameda County Office of Education](https://bliptext.com/articles/alameda-county-office-of-education) oversees seventeen K–12 school districts and one K–8 district in Alameda County.\nIn all, there are approximately 10,000 teachers serving 225,000 students.\nThe ACOE also services three community college districts with a total enrollment of approximately 55,000 students.\nThe [Alameda County Library](https://bliptext.com/articles/alameda-county-library) operates libraries in the cities of [Albany](https://bliptext.com/articles/albany-california), [Dublin](https://bliptext.com/articles/dublin-california), [Fremont](https://bliptext.com/articles/fremont-california), [Newark](https://bliptext.com/articles/newark-california) and [Union City](https://bliptext.com/articles/union-city-california) and the unincorporated communities of [Castro Valley](https://bliptext.com/articles/castro-valley-california) and [San Lorenzo](https://bliptext.com/articles/san-lorenzo-california).\nThe cities of Alameda, Berkeley, Hayward, Livermore, Oakland, San Leandro, and Pleasanton have their own library systems.\n\n## Colleges and universities\nAlameda County is home to the [[University of California](https://bliptext.com/articles/university-of-california), Berkeley](https://bliptext.com/articles/university-of-california-berkeley), the flagship campus of the [University of California](https://bliptext.com/articles/university-of-california) system, and one of the largest and most prestigious research universities in the world.\nOther colleges and universities located within Alameda county include:\nOther local colleges and universities which have now closed include:\n\n## Public schools\nK–12 unified school districts:\nOthers:\n\n# Arts\nThe [Alameda County Arts Commission](https://bliptext.com/articles/alameda-county-arts-commission), a division of the county administration, under the [California Arts Council](https://bliptext.com/articles/california-arts-council), was created in 1965.\nIts fifteen appointed members act in an advisory capacity to the board of supervisors, in promoting the arts.\nThe [Oakland Museum of California](https://bliptext.com/articles/oakland-museum-of-california) has a substantial collection of California art works and historical artifacts.\n\n# Sports\nThe following sports teams play in Alameda County:\n\n# Events\nThe annual county fair is held at the [Alameda County Fairgrounds](https://bliptext.com/articles/alameda-county-fairgrounds) in [Pleasanton](https://bliptext.com/articles/pleasanton-california).\nThe fair runs for four weekends from June to July.\nAttractions include horse racing, carnival rides, [4-H](https://bliptext.com/articles/4-h) exhibits, and live bands.\n\n# Parks and recreation\nThere are more than 350 parks located within the county.\nThe [East Bay Regional Park District](https://bliptext.com/articles/east-bay-regional-park-district) operates within Alameda and neighboring Contra Costa County, with numerous parks within the county, including [Tilden Regional Park](https://bliptext.com/articles/tilden-regional-park), [Redwood Regional Park](https://bliptext.com/articles/redwood-regional-park), [Anthony Chabot Regional Park](https://bliptext.com/articles/anthony-chabot-regional-park), [Coyote Hills Regional Park](https://bliptext.com/articles/coyote-hills-regional-park), [Ardenwood Historic Farm](https://bliptext.com/articles/ardenwood-historic-farm), [Pleasanton Ridge Regional Park](https://bliptext.com/articles/pleasanton-ridge-regional-park) and [Vargas Plateau Regional Park](https://bliptext.com/articles/vargas-plateau-regional-park).\n[Eastshore State Park](https://bliptext.com/articles/eastshore-state-park) is located partially along the bay shore of northern Alameda County.\nThe [San Francisco Bay Trail](https://bliptext.com/articles/san-francisco-bay-trail), a project of the [Association of Bay Area Governments](https://bliptext.com/articles/association-of-bay-area-governments), will run along the bay shore of the county.\nThe [Hayward Area Recreation and Park District](https://bliptext.com/articles/hayward-area-recreation-and-park-district) is the largest special park district in California.\n\n# Transportation\n\n## Major highways\n\n## Mass transit\n\n### Rail\n\n### Bus\n\n### Ferry\n\n## Airports\nThe main airport is the [San Francisco Bay Oakland International Airport](https://bliptext.com/articles/san-francisco-bay-oakland-international-airport), with two [general aviation](https://bliptext.com/articles/general-aviation) airports, the [Hayward Executive Airport](https://bliptext.com/articles/hayward-executive-airport) and [Livermore Municipal Airport](https://bliptext.com/articles/livermore-municipal-airport).\n\n# Services\n[Alameda Health System](https://bliptext.com/articles/alameda-health-system) operates the public health system in Alameda County.\nIt operates five hospitals ([Alameda Hospital](https://bliptext.com/articles/alameda-hospital), Fairmont Hospital, [Highland Hospital](https://bliptext.com/articles/highland-hospital-oakland-california), John George Psychiatric Hospital, and San Leandro Hospital), and four primary care medical clinics (called ambulatory wellness centers) within the county.\nThe [Alameda County Community Food Bank](https://bliptext.com/articles/alameda-county-community-food-bank) nonprofit provides [food bank](https://bliptext.com/articles/food-bank) resources to residents.\nThe Family Emergency Shelter Coalition coordinates services for homeless families.\n\n# Landmarks\nAlameda County has eight [National Historic Landmarks](https://bliptext.com/articles/national-historic-landmarks): [The Abbey, Joaquin Miller House](https://bliptext.com/articles/joaquin-miller-house), [First Church of Christ, Scientist](https://bliptext.com/articles/first-church-of-christ-scientist-berkeley-california), USS Hornet (CVS-12) (aircraft carrier), [Lake Merritt Wild Duck Refuge](https://bliptext.com/articles/lake-merritt), Lightship WAL-605, Relief, [Paramount Theatre](https://bliptext.com/articles/paramount-theater-oakland-california), Potomac (Presidential yacht), and [Room 307, Gilman Hall, University of California](https://bliptext.com/articles/gilman-hall).\nThe county has a large [number of National Historic Places](https://bliptext.com/articles/national-register-of-historic-places-listings-in-alameda-county-california), as well as [a number of California Historical Landmarks](https://bliptext.com/articles/california-historical-landmarks-in-alameda-county-california).\n\n# Sister county\nAlameda has a [sister county](https://bliptext.com/articles/sister-city): [Taoyuan County, Taiwan](https://bliptext.com/articles/taoyuan-city) (now Taoyuan City).\n\n# Communities\n# [Cities and census designated places of Alameda County | upload.wikimedia.org/wikipedia/commons/9/9c/Alameda///County///California///Incorporated///and///Unincorporated///areas///annotated.svg]\n\n## Cities\n\n## Census-designated places\n [Ashland](https://bliptext.com/articles/ashland-california) \n [Castro Valley](https://bliptext.com/articles/castro-valley-california) \n [Cherryland](https://bliptext.com/articles/cherryland-california) \n [Fairview](https://bliptext.com/articles/fairview-california) \n [San Lorenzo](https://bliptext.com/articles/san-lorenzo-california) \n [Sunol](https://bliptext.com/articles/sunol-california) \n \n\n## Unincorporated communities\n\n## Former townships\n# [Map of Alameda County, 1878 (Six Townships) | upload.wikimedia.org/wikipedia/commons/8/8e/Map///of///Alameda///County///1878///LARGE.jpg]\n\n## Population ranking\nThe population ranking of the following table is based on the [2020 census](https://bliptext.com/articles/2020-united-states-census) of Alameda County.\n**†** county seat\n\n# People","revisionCount":0},"hasMore":false,"nextCursor":null}