Dorchester County, South Carolina

Dorchester County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF

Government Unit	Unit Type	Jurisdiction Role	Contact / Address
COUNTY OF DORCHESTER GUS Population: 174,663 (2024) ID: 174857	County	Official County Government	Contact: COUNTY ADMINISTRATOR 201 JOHNSTON ST, SAINT GEORGE SC 29477-2412
TOWN OF SUMMERVILLE GUS Population: 52,625 (2024) ID: 174910	Municipal	Municipal Government Within County	Contact: DIRECTOR OF PLANNING & ECONOMIC DEVE 200 S MAIN ST, SUMMERVILLE SC 29483-6010
TOWN OF ST GEORGE GUS Population: 1,855 (2024) ID: 134437	Municipal	Municipal Government Within County	Contact: MAYOR ANNE J JOHNSTON 305 RIDGE ST, SAINT GEORGE SC 29477
TOWN OF RIDGEVILLE GUS Population: 1,234 (2024) ID: 174909	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 56, RIDGEVILLE SC 29472-0056
TOWN OF HARLEYVILLE GUS Population: 740 (2024) ID: 174907	Municipal	Municipal Government Within County	Contact: CLERK/TREASURER PO BOX 35, HARLEYVILLE SC 29448-0035
TOWN OF REEVESVILLE GUS Population: 197 (2024) ID: 174908	Municipal	Municipal Government Within County	Contact: CLERK PO BOX 1, REEVESVILLE SC 29471-0001