Geographic reference
Union County, South Dakota
Union County is a county or county-equivalent in South Dakota.
Reference details
- State
- South Dakota (SD)
- Census GEOID
- 46127
- Land area
- 1,196.514 km²
- Water area
- 13.343 km²
- Representative point
- 42.831106, -96.650829
View point on map ↗
Geographic facts: 2026 U.S. Census Gazetteer. Coordinates identify a representative point, not the full geographic boundary.