In 2019, Corson County, SD had a population of 4.15k people with a median age of 28.7 and a median household income of $35,759. Between 2018 and 2019 the population of Corson County, SD declined from 4,168 to 4,150, a −0.432% decrease and its median household income grew from $35,441 to $35,759, a 0.897% increase.
The 5 largest ethnic groups in Corson County, SD are American Indian & Alaska Native (Non-Hispanic) (68.8%), White (Non-Hispanic) (28.9%), Two+ (Non-Hispanic) (1.52%), Black or African American (Non-Hispanic) (0.337%), and American Indian & Alaska Native (Hispanic) (0.289%). 0% of the households in Corson County, SD speak a non-English language at home as their primary language, and 99.9% of the residents in Corson County, SD are U.S. citizens.
In 2019, the median property value in Corson County, SD was $58,500, and the homeownership rate was 53.8%. Most people in Corson County, SD drove alone to work, and the average commute time was 15 minutes. The average car ownership in Corson County, SD was 2 cars per household.