Union County, South Carolina

Union County
Union County Carnegie Library
Motto(s): 
"Gear Up"
"A Great Place To Do Business - And Live Life!"
Location within the U.S. state of South Carolina
South Carolina's location within the U.S.
Coordinates: 34°41′N 81°37′W / 34.69°N 81.62°W / 34.69; -81.62
Country United States
State South Carolina
Founded1785
Named afterThe old Union Church
SeatUnion
Largest communityUnion
Area
  Total
515.44 sq mi (1,335.0 km2)
  Land513.59 sq mi (1,330.2 km2)
  Water1.85 sq mi (4.8 km2)  0.36%
Population
 (2020)
  Total
27,244
  Estimate 
(2023)
26,629
  Density53/sq mi (20/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district5th
Websitegearupunionsc.com

Union County is a county located in the U.S. state of South Carolina. As of the 2020 census, the population was 27,244. Its county seat is Union. The county was created in 1785.

Union County is included in the Spartanburg, SC Metropolitan Statistical Area, which is also part of the Greenville-Spartanburg-Anderson, SC Combined Statistical Area.