In 2020, Douglas County, SD had a population of 2.91k people with a median age of 45.1 and a median household income of $61,793. Between 2019 and 2020 the population of Douglas County, SD declined from 2,929 to 2,913, a −0.546% decrease and its median household income grew from $58,684 to $61,793, a 5.3% increase.
The 5 largest ethnic groups in Douglas County, SD are White (Non-Hispanic) (94.2%), Two+ (Non-Hispanic) (2.68%), American Indian & Alaska Native (Non-Hispanic) (2.37%), White (Hispanic) (0.721%), and American Indian & Alaska Native (Hispanic) (0.0343%).
None of the households in Douglas County, SD reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
99.9% of the residents in Douglas County, SD are U.S. citizens.
In 2020, the median property value in Douglas County, SD was $84,100, and the homeownership rate was 74.3%. Most people in Douglas County, SD drove alone to work, and the average commute time was 18.8 minutes. The average car ownership in Douglas County, SD was 3 cars per household.