Yankton County, South Dakota
Yankton County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 23,310. Its county seat is Yankton. Yankton County comprises the Yankton, SD Micropolitan Statistical Area. Geography Yankton County lies on the south side of South Dakota. Its south boundary line abuts the north boundary line of the state of Nebraska (across the Missouri River). The Missouri flows eastward along the county's south border. The James River flows south-southeastward through the west central portion of the county, discharging into the Missouri near the midpoint of the county's south line. The county terrain consists of rolling hills, carved by creeks and drainages, hosting several lakes and ponds. The area is devoted to agriculture. The terrain slopes to the south and the east. Its highest point is ASL, on the eastern portion of its north boundary line. The county has a total area of , of which is land and (2.1%) is water. Lewis & Clark Lake, a popular regional tourist and recreational destination is found in the southwestern part of the county. Major highways U.S. Highway 81 South Dakota Highway 46 South Dakota Highway 50 South Dakota Highway 52 South Dakota Highway 153 South Dakota Highway 314 Airports Chan Gurney Municipal Airport Adjacent counties Turner County - northeast Clay County - east Cedar County, Nebraska - southeast Knox County, Nebraska - southwest Bon Homme County - west Hutchinson County - northwest Protected areas Chief White Crane State Recreation Area Dakota Territorial Capitol Building/Riverside Park Diede Waterfowl Production Area Edelman Waterfowl Production Area Gavins Point National Fish Hatchery Hansen Waterfowl Production Area Lewis & Clark State Recreation Area Missouri National Recreational River (part) Pierson Ranch State Recreation Area Lakes and reservoirs Beaver Lake Guthmiller Lake Lake Yankton Lewis and Clark Lake (part) Marindahl Lake Demographics 2020 census As of the census of 2020, there were 23,310 people. 2010 census As of the census of 2010, there were 22,438 people, 8,770 households, and 5,476 families in the county. The population density was . There were 9,652 housing units at an average density of . 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%