In 2021, Day County, SD had a population of 5.49k people with a median age of 47.3 and a median household income of $52,775. Between 2020 and 2021 the population of Day County, SD grew from 5,452 to 5,487, a 0.642% increase and its median household income grew from $46,753 to $52,775, a 12.9% increase.
The 5 largest ethnic groups in Day County, SD are White (Non-Hispanic) (85.2%), American Indian & Alaska Native (Non-Hispanic) (10.6%), Two+ (Non-Hispanic) (1.66%), White (Hispanic) (0.929%), and Other (Hispanic) (0.82%).
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.
99.7% of the residents in Day County, SD are U.S. citizens.
In 2021, the median property value in Day County, SD was $120,700, and the homeownership rate was 75.6%.
Most people in Day County, SD drove alone to work, and the average commute time was 18.2 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.