Union County, SD — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
16,916
Male
8,644
51.1%
Female
8,272
48.9%
Median Age
40.4 yrs
Avg Household Size
2.4
Foreign Born
2.4%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher25.2%
High School or Higher44.5%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
5.8%
Disability
0.0%
Non-English Home
3.5%
Married
49.5%
Union County, SD has a population of 16,916 according to 2023 Census Bureau estimates. The median age is 40.4 years. The largest racial or ethnic group is White at 90.4% of the population. 25.2% of residents hold a bachelor's degree or higher. 2.4% of residents are foreign-born.