In 2022, Day County, SD had a population of 5.49k people with a median age of 47.2 and a median household income of $57,558. Between 2021 and 2022 the population of Day County, SD declined from 5,487 to 5,485, a −0.0364% decrease and its median household income grew from $52,775 to $57,558, a 9.06% increase.
The 5 largest ethnic groups in Day County, SD are White (Non-Hispanic) (85.3%), American Indian & Alaska Native (Non-Hispanic) (9.64%), Two+ (Non-Hispanic) (2.5%), White (Hispanic) (1.02%), and Other (Hispanic) (0.693%).
None of the households in Day 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.
99.5% of the residents in Day County, SD are U.S. citizens.
In 2022, the median property value in Day County, SD was $134,800, and the homeownership rate was 74.8%.
Most people in Day County, SD drove alone to work, and the average commute time was 19.5 minutes. The average car ownership in Day County, SD was 2 cars per household.
Day County, SD borders Brown County, SD, Clark County, SD, Codington County, SD, Grant County, SD, Marshall County, SD, Roberts County, SD, and Spink County, SD.