Union County, South Carolina

county in South Carolina, United States

Union County is a county in the state of South Carolina, United States. As of the 2020 census, 27,244 people lived there.[2] Its county seat is Union.[3] The county was formed in 1785.[4]

Union County
Union County Carnegie Library
Union County Carnegie Library
"Gear Up"
"A Great Place To Do Business - And Live Life!"
Map of South Carolina highlighting Union County
Location within the U.S. state of South Carolina
Map of the United States highlighting South Carolina
South Carolina's location within the U.S.
Coordinates: 34°41′25″N 81°36′57″W / 34.690397°N 81.615896°W / 34.690397; -81.615896
Country United States
State South Carolina
Named forThe old Union Church[1]
Largest communityUnion
 • Total515.44 sq mi (1,335.0 km2)
 • Land513.59 sq mi (1,330.2 km2)
 • Water1.85 sq mi (4.8 km2)  0.36%
 • Total27,244
 • Density53.04/sq mi (20.48/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district5th


  1. "About". gearupunionsc.com. Retrieved March 16, 2023.
  2. "QuickFacts: Union County, South Carolina". United States Census Bureau. Retrieved January 20, 2024.
  3. "Find a County". National Association of Counties. Retrieved June 7, 2011.
  4. "South Carolina: Individual County Chronologies". South Carolina Atlas of Historical County Boundaries. The Newberry Library. 2009. Archived from the original on January 3, 2017. Retrieved March 21, 2015.