Dorchester County, South Carolina

Dorchester County
Location within the U.S. state of South Carolina
South Carolina's location within the U.S.
Coordinates: 33°05′N 80°24′W / 33.08°N 80.40°W / 33.08; -80.40
Country United States
State South Carolina
FoundedFebruary 25, 1897
Named afterDorchester, Massachusetts
SeatSt. George
Largest communityNorth Charleston
Area
  Total
571.18 sq mi (1,479.3 km2)
  Land568.59 sq mi (1,472.6 km2)
  Water2.59 sq mi (6.7 km2)  0.45%
Population
 (2020)
  Total
161,540
  Estimate 
(2023)
169,833
  Density280/sq mi (110/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional districts1st, 6th
Websitewww.dorchestercountysc.gov

Dorchester County is located in the U.S. state of South Carolina. As of the 2020 census, the population was 161,540. Its county seat is St. George. The county was created on February 25, 1897 by an act of the South Carolina General Assembly. Dorchester County is included in the Charleston-North Charleston, SC Metropolitan Statistical Area. It is in the Lowcountry region of South Carolina.