In 2023, Union County, SD had a population of 16.9k people with a median age of 40.4 and a median household income of $84,137. Between 2022 and 2023 the population of Union County, SD grew from 16,700 to 16,916, a 1.29% increase and its median household income grew from $82,036 to $84,137, a 2.56% increase.
The 5 largest ethnic groups in Union County, SD are White (Non-Hispanic) (89%), Two+ (Non-Hispanic) (3.16%), Two+ (Hispanic) (2%), Asian (Non-Hispanic) (1.41%), and White (Hispanic) (1.4%).
None of the households in Union 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.
98.6% of the residents in Union County, SD are U.S. citizens.
In 2023, the median property value in Union County, SD was $269,500, and the homeownership rate was 71.3%.
Most people in Union County, SD drove alone to work, and the average commute time was 18.6 minutes. The average car ownership in Union County, SD was 2 cars per household.
Union County, SD borders Plymouth County, IA, Sioux County, IA, Woodbury County, IA, Dakota County, NE, Dixon County, NE, Clay County, SD, and Lincoln County, SD.