Sedgwick County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 2,404. The county seat is Julesburg. The county was named for Fort Sedgwick, a military post along the Platte Trail, which was named for General John Sedgwick. It is located at the state border with Nebraska.

History

Sedgwick County was named after John Sedgwick, who was a major general in the Union Army during the American Civil War.

Geography

According to the U.S. Census Bureau, the county has a total area of 549 sqmi, of which 548 sqmi is land and 1.4 sqmi (0.2%) is water.

Adjacent counties

Major highways

Trails and byways

Upper Crossing of the California Trail

Demographics

At the 2000 census there were 2,747 people in 1,165 households, including 802 families, in the county. The population density was 5 /mi2. There were 1,387 housing units at an average density of 2 /mi2. The racial makeup of the county was 90.50% White, 0.51% Black or African American, 0.15% Native American, 0.76% Asian, 0.07% Pacific Islander, 5.97% from other races, and 2.04% from two or more races. 11.43% of the population were Hispanic or Latino of any race. Of the 1,165 households 26.40% had children under the age of 18 living with them, 59.10% were married couples living together, 6.60% had a female householder with no husband present, and 31.10% were non-families. 29.40% of households were one person and 13.60% were one person aged 65 or older. The average household size was 2.31 and the average family size was 2.83. The age distribution was 22.80% under the age of 18, 6.60% from 18 to 24, 23.50% from 25 to 44, 25.00% from 45 to 64, and 22.10% 65 or older. The median age was 43 years. For every 100 females there were 100.10 males. For every 100 females age 18 and over, there were 97.20 males. The median household income was $28,278 and the median family income was $33,953. Males had a median income of $25,463 versus $16,392 for females. The per capita income for the county was $16,125. About 7.80% of families and 10.00% of the population were below the poverty line, including 13.70% of those under age 18 and 4.20% of those age 65 or over.

Politics

Sedgwick County has been strongly Republican for most of its history. It was the only Colorado county to vote for Charles Evans Hughes in 1916 and one of only two carried by Theodore Roosevelt in 1912, while only three Democratic presidential candidates – William Jennings Bryan in the “free silver” 1896 election plus Franklin D. Roosevelt and Lyndon Johnson in the 1932, 1936 and 1964 landslide wins – have ever carried the county, which has voted for the same candidate as the state of South Dakota in every election since its formation.

Communities

Towns