Yolo County (Wintun: Yo-loy), officially the County of Yolo, is a county located in the northern portion of the U.S. state of California. Yolo County was one of the original counties of California, created in 1850 at the time of statehood. As of the 2020 census, the population was 216,403. Its county seat is Woodland. Yolo County is included in the Greater Sacramento metropolitan area and is located in the Sacramento Valley.

Etymology

In the original act of 1850 the name was spelled "Yola." Yolo is a Patwin Native American name variously believed to be a corruption of a tribal name, Yo-loy, meaning "a place abounding in rushes", the village of Yodoi, believed to be in the vicinity of Knights Landing, California, or the name of the chief of said village, Yodo.

History

Yolo County was one of the original counties of California, created in 1850 at the time of statehood.

Government

The county is governed by a board of five district supervisors as well as the governments of its four incorporated cities: Davis, West Sacramento, Winters, and Woodland.

Geography

According to the U.S. Census Bureau, the county has a total area of 1024 sqmi, of which 1015 sqmi is land and 8.9 sqmi (0.9%) is water.

Adjacent counties

Transportation

Major highways

County roads

Addressing in Yolo County is based on a system of numbered county roads. The numbering system works in the following way: Each integer road number is generally 1 mi apart, with letters occasionally designating roads less than 1 mi apart. County roads entering urban areas generally become named roads once they cross a city boundary. Some examples include County Road 101 in Woodland being renamed Pioneer Ave. and County Road 102 (also known as County Route E8) in Davis being named Pole Line Road.

Public transportation

Airports

Port

The Port of Sacramento, now known as the Port of West Sacramento, is an inland port in West Sacramento, California, in the Sacramento metropolitan area. It is 79 nmi northeast of San Francisco, and is centered in the California Central Valley, one of the richest agricultural regions in the world.

Crime

The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense.

Cities by population and crime rates

Politics

Yolo is a strongly Democratic county in presidential and congressional elections. The last Republican presidential candidate to win a majority in the county was Dwight Eisenhower in 1952, which is the longest Republican drought for any California county. In fact, since 1928, Eisenhower's win in 1952 was the only time the county was carried by the Republican presidential nominee. Yolo County has been somewhat more likely to elect Republican governors since then (Ronald Reagan carried the county in 1966, George Deukmejian in 1986, and Arnold Schwarzenegger in 2003 and 2006). In the United States House of Representatives, Yolo County is split between California's 4th and 7th congressional districts, represented by and, respectively. In the California State Senate, the county is split between the 3rd and 6th Senate districts, represented by and, respectively. In the California State Assembly, the county is split between the 4th and 7th Assembly districts, represented by and, respectively. In June 1978, Yolo was one of only three counties in the entire state to reject Proposition 13 (the others being San Francisco and Kern). In November 2008, Yolo was one of just three counties in California's interior in which voters rejected Proposition 8 to ban gay marriage. Yolo voters rejected Proposition 8 by a vote of 58.65 percent to 41.35 percent. The other interior counties in which Proposition 8 failed to receive a majority of votes were Alpine County and Mono County.

Cities by population and voter registration

Demographics

2020 census

2011

Places by population, race, and income

2010

The 2010 United States Census reported that Yolo County had a population of 200,849. The ethnic makeup of Yolo County was 126,883 (63.2%) White, 5,208 (2.6%) African American, 2,214 (1.1%) Native American, 26,052 (13.0%) Asian, 910 (0.5%) Pacific Islander, 27,882 (13.9%) from other races, and 11,700 (5.8%) from two or more races. Hispanic or Latino of any race were 60,953 persons (30.3%).

2000

As of the census of 2000, there were 168,660 people, 59,375 households, and 37,465 families residing in the county. The population density was 166 PD/sqmi. There were 61,587 housing units at an average density of 61 /mi2. The ethnic makeup of the county was 67.7% White, 2.0% Black or African American, 1.2% Native American, 9.9% Asian, 0.3% Pacific Islander, 13.8% from other races, and 5.2% from two or more races. 25.9% of the population were Hispanic or Latino of any race. 10.0% were of German, 6.6% English and 6.4% Irish ancestry according to Census 2000. 68.5% spoke English, 19.5% Spanish, 2.1% Chinese or Mandarin and 1.8% Russian as their first language. There were 59,375 households, out of which 33.6% had children under the age of 18 living with them, 47.6% were married couples living together, 11.1% had a female householder with no husband present, and 36.9% were non-families. 23.3% of all households were made up of individuals, and 7.3% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.25. In the county, the population was spread out, with 25.2% under the age of 18, 18.3% from 18 to 24, 28.2% from 25 to 44, 18.9% from 45 to 64, and 9.4% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 95.6 males. For every 100 females age 18 and over, there were 92.2 males. The median income for a household in the county was $40,769, and the median income for a family was $51,623. Males had a median income of $38,022 versus $30,687 for females. The per capita income for the county was $19,365. About 9.5% of families and 18.4% of the population were below the poverty line, including 16.0% of those under age 18 and 7.4% of those age 65 or over.

Education

Public schools

The county's public schools are managed by the Yolo County Office of Education.

Colleges and universities

Communities

Cities

Census-designated places

Other unincorporated communities

Population ranking

The population ranking of the following table is based on the 2010 census of Yolo County. † county seat