York County, South Carolina

York County, South Carolina
Location within the U.S. state of South Carolina
Coordinates: 34°58′N 81°11′W / 34.97°N 81.18°W / 34.97; -81.18
Country United States
State South Carolina
Founded1785
Named afterJames II of England
SeatYork
Largest cityRock Hill
Area
 • Total
696.09 sq mi (1,802.9 km2)
 • Land681.03 sq mi (1,763.9 km2)
 • Water15.06 sq mi (39.0 km2)  2.16%
Population
 (2020)
 • Total
282,090
 • Estimate 
(2024)
303,001
 • Density414.21/sq mi (159.93/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district5th
Websitewww.yorkcountygov.com

York County is a county on the north central border in the U.S. state of South Carolina. As of the 2020 census, the population was 282,090, making it the seventh-most populous county in the state. Its county seat is the city of York, and its most populous community is Rock Hill. One Interstate Highway serves the county, Interstate 77. York County is part of the Charlotte metropolitan area.