County · South Dakota · United States
Union County ZIP codes
5 ZIP codes · 5 cities · FIPS 46127
Key facts
- State
- South Dakota (SD)
- FIPS code
- 46127
- Population
- 16,916
- Median household income
- $84,137
- Median age
- 40.4
- Land area
- 460.8 sq mi (1,193.4 km²)
- Population density
- 37 / sq mi
- Area codes
- 605
Cities and ZIP codes in Union County (5)
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.