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.
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.