Barnwell, South Carolina

Barnwell, South Carolina
Barnwell County Courthouse, June 1968
Nickname(s): 
Gateway to the Low Country, Red Hill
Location of Barnwell, South Carolina
Coordinates: 33°14′40″N 81°21′48″W / 33.24444°N 81.36333°W / 33.24444; -81.36333
CountryUnited States
StateSouth Carolina
CountyBarnwell
Town1829
Government
  TypeMayor-Council-Commission
  MayorRon Still
Area
  Total
7.99 sq mi (20.70 km2)
  Land7.84 sq mi (20.31 km2)
  Water0.15 sq mi (0.38 km2)
Elevation
217 ft (66 m)
Population
 (2020)
  Total
4,652
  Density593.22/sq mi (229.03/km2)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
ZIP codes
29812-29813
Area codes803, 839
FIPS code45-04060
GNIS feature ID1244965
Websitewww.cityofbarnwell.com

Barnwell is a city in and county seat of Barnwell County, South Carolina, United States, located along U.S. Route 278. The population was 4,750 at the 2010 census.