In 2020, Union County, SD had a population of 15.7k people with a median age of 40.2 and a median household income of $74,006. Between 2019 and 2020 the population of Union County, SD grew from 15,368 to 15,659, a 1.89% increase and its median household income grew from $70,378 to $74,006, a 5.16% increase.
The 5 largest ethnic groups in Union County, SD are White (Non-Hispanic) (90.6%), Two+ (Non-Hispanic) (2.72%), White (Hispanic) (2.38%), Asian (Non-Hispanic) (1.58%), and Black or African American (Non-Hispanic) (0.792%).
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% of the residents in Union County, SD are U.S. citizens.
In 2020, the median property value in Union County, SD was $206,300, and the homeownership rate was 68.1%. Most people in Union County, SD drove alone to work, and the average commute time was 19 minutes. The average car ownership in Union County, SD was 2 cars per household.