Davison County is a county in the U.S. state of South Dakota. As of the 2010 United States Census, the population was 19,504. Its county seat is Mitchell. The county was created in 1873 and organized in 1874. It was named for Henry C. Davison, the first settler in the county.
The terrain of Davison County consists of rolling hills. Its area is largely devoted to agriculture. The James River flows south-southeastward through the NE portion of the county. A local drainage flows eastward through the upper quarter of the county, terminating in Lake Mitchell, north of the city of Mitchell. The terrain slopes to the east, and rises toward its SW corner. Its highest point is on the western portion of its southern border, at 1,667′ (508m) ASL.
The county has a total area of 437 square miles (1,130 km), of which 436 square miles (1,130 km) is land and 1.4 square miles (3.6 km) (0.3%) is water. It is the fourth-smallest county in South Dakota by area.
As of the 2000 United States Census, there were 18,741 people, 7,585 households, and 4,770 families in the county. The population density was 43 people per square mile (17/km²). There were 8,093 housing units at an average density of 19 per square mile (7/km²). The racial makeup of the county was 96.23% White, 0.27% Black or African American, 1.98% Native American, 0.43% Asian, 0.02% Pacific Islander, 0.30% from other races, and 0.77% from two or more races. 0.69% of the population were Hispanic or Latino of any race. 50.8% were of German, 10.1% Norwegian, 5.5% Irish and 5.4% American ancestry.
There were 7,585 households out of which 31.10% had children under the age of 18 living with them, 51.40% were married couples living together, 8.20% had a female householder with no husband present, and 37.10% were non-families. 30.80% of all households were made up of individuals and 13.40% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 3.00.
The county population had 25.40% under the age of 18, 12.00% from 18 to 24, 25.90% from 25 to 44, 20.40% from 45 to 64, and 16.20% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 94.10 males. For every 100 females age 18 and over, there were 91.80 males.
The median income for a household in the county was $33,476, and the median income for a family was $44,357. Males had a median income of $30,825 versus $20,940 for females. The per capita income for the county was $17,879. About 8.20% of families and 11.50% of the population were below the poverty line, including 11.30% of those under age 18 and 10.40% of those age 65 or over.
As of the 2010 United States Census, there were 19,504 people, 8,296 households, and 4,892 families in the county. The population density was 44.8 inhabitants per square mile (17.3/km). There were 8,852 housing units at an average density of 20.3 per square mile (7.8/km). The racial makeup of the county was 94.4% white, 2.5% American Indian, 0.5% Asian, 0.4% black or African American, 0.1% Pacific islander, 0.5% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 1.5% of the population. In terms of ancestry, 51.8% were German, 10.6% were Norwegian, 10.1% were Irish, 7.4% were English, 6.0% were Dutch, and 4.5% were American.
Of the 8,296 households, 28.1% had children under the age of 18 living with them, 46.6% were married couples living together, 8.5% had a female householder with no husband present, 41.0% were non-families, and 34.3% of all households were made up of individuals. The average household size was 2.26 and the average family size was 2.91. The median age was 37.8 years.
The median income for a household in the county was $41,867 and the median income for a family was $54,677. Males had a median income of $37,688 versus $26,223 for females. The per capita income for the county was $22,794. About 6.9% of families and 13.8% of the population were below the poverty line, including 12.1% of those under age 18 and 10.4% of those age 65 or over.
Davison County South Dakota neighborhoods include: Alcester, Baltic, Black Hawk, Box Elder, Brandon, Buffalo Ridge, Camp Crook, Canton, Caputa, Central City, Chancellor, Colton, Creighton, Crooks, Custer, Deadwood, Dell Rapids, Elkton, Ellsworth Afb, Garretson, Hartford, Hermosa, Hill City, Howes, Humboldt, Keystone, Lead, Ludlow, Montrose, Nemo, New Underwood, North Sioux City, Owanka, Parker, Quinn, Rapid City, Renner, Rowena, Saint Onge, Scenic, Sherman, Silver City, Sioux Falls, Spearfish, Sturgis, Valley Springs, Wall, Wanblee, Wasta, Whitewood