Yankton County, South Dakota

Geography

According to the U.S. Census Bureau, the county has a total area of 532 square miles (1,380 km²), of which 521 square miles (1,350 km²) is land and 11 square miles (28 km²) (2.1%) is water. It is bordered by the Missouri River.

Major highways

Adjacent counties

National protected area

2000 census

As of the census of 2000, there were 21,652 people, 8,187 households, and 5,403 families residing in the county. The population density was 42 people per square mile (16/km²). There were 8,840 housing units at an average density of 17 per square mile (7/km²). The racial makeup of the county is 95.10% White, 1.16% African American, 1.63% Native American, 0.42% Asian, 0.02% Pacific Islander, 0.74% from other races, and 0.91% from two or more races. 1.82% of the population are Hispanic or Latino of any race.

There were 8,187 households out of which 33.00% had children under the age of 18 living with them, 54.40% were married couples living together, 8.30% had a female householder with no husband present, and 34.00% were non-families. 29.30% of all households were made up of individuals and 12.00% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 3.03.

In the county, the population was spread out with 25.70% under the age of 18, 8.70% from 18 to 24, 29.00% from 25 to 44, 22.00% from 45 to 64, and 14.60% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 101.90 males. For every 100 females age 18 and over, there were 101.30 males.

The median income for a household in the county was $35,374, and the median income for a family was $43,600. Males had a median income of $29,010 versus $20,686 for females. The per capita income for the county was $17,312. About 6.60% of families and 9.60% of the population were below the poverty line, including 10.00% of those under age 18 and 9.00% of those age 65 or over.

2010 census

As of the 2010 United States Census, there were 22,438 people, 8,770 households, and 5,476 families residing in the county. The population density was 43.1 inhabitants per square mile (16.6/km²). There were 9,652 housing units at an average density of 18.5 per square mile (7.1/km²). The racial makeup of the county was 92.8% white, 2.5% American Indian, 1.5% black or African American, 0.5% Asian, 1.1% from other races, and 1.4% from two or more races. Those of Hispanic or Latino origin made up 2.7% of the population. In terms of ancestry,

Of the 8,770 households, 29.2% had children under the age of 18 living with them, 50.1% were married couples living together, 8.8% had a female householder with no husband present, 37.6% were non-families, and 32.0% of all households were made up of individuals. The average household size was 2.30 and the average family size was 2.90. The median age was 41.3 years.

The median income for a household in the county was $47,124 and the median income for a family was $62,070. Males had a median income of $37,637 versus $29,488 for females. The per capita income for the county was $24,776. About 5.0% of families and 11.2% of the population were below the poverty line, including 10.7% of those under age 18 and 13.5% of those age 65 or over.

Cities

Towns

Townships

The county is divided into nine townships:

Unorganized territories

The county contains two areas of unorganized territory: Southeast Yankton and West Yankton.