Sample of Barnwell Communities
The following are some of the communities located in Barnwell County:
| Community | 2009
Population | 2000
Population | Change
(2009 vs. 2000) |
| Barnwell | 4,733 | 5,035 | 6% decrease |
| Williston | 3,133 | 3,307 | 5.26% decrease |
| Blackville | 2,819 | 2,973 | 5.18% decrease |
| Hilda | 417 | 436 | 4.36% decrease |
| Snelling | 239 | 246 | 2.85% decrease |
| Kline | 229 | 238 | 3.78% decrease |
| Elko | 204 | 212 | 3.77% decrease |
Counties Neighboring Barnwell
The following counties adjoin and form the boundaries of Barnwell:
| County | Direction | 2009
Population | 2000
Population | Change
(2009 vs. 2000) |
| |
| Burke (GA) |  SW | 22,797 | 22,243 | 2.49% |
| |
| Aiken |  NW | 156,017 | 142,552 | 9.45% |
| Allendale |  S | 10,195 | 11,211 | -9.06% |
| Bamberg |  E | 15,005 | 16,658 | -9.92% |
| Orangeburg | E | 90,112 | 91,582 | -1.61% |
|
