Barnwell County, South Carolina
4 ZIP codes · 548.38 sq mi of land · FIPS 45011
| Population | 20,521 |
|---|---|
| State | South Carolina |
| FIPS code | 45011 |
| Time zone | Eastern |
| Land area | 548.38 sq mi |
| Center (lat, long) | 33.2606, -81.4342 |
Area codes in this area
These are the area codes that most often serve Barnwell County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
BarnwellBlackvilleElkoWilliston
ZIP codes in Barnwell County
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.