| 911 Emergency (Fire, Police, Ambulance) | | 911 |
| Animal Emergency Care in Augusta | | 706-733-7458 |
| Animal Emergency Care in Columbia | | 803-798-3837 |
| Barnwell City Hall | | 803-259-3266 |
| Barnwell County Administrator | | 803-541-1000 |
| Barnwell County Arts Council | | 803-259-4589 |
| Barnwell County Chamber of Commerce | | 803-259-7446 |
| Barnwell County Clerk of Court | | 803-541-1020 |
| Barnwell County Economic Development Commission | | 803-259-1263 |
| Barnwell County Health Department | | 803-541-1061 |
| Barnwell County Hospital | | 803-259-1000 |
| Barnwell County Library | | 803-259-3612 |
| Barnwell County Museum | | 803-259-1916 |
| Barnwell County Sheriff's Office | | 803-541-1078 |
| Barnwell County Tax Assessor | | 803-541-1011 |
| Barnwell County Voter Registration Board | | 803-541-1060 |
| Barnwell Downtown Development Association | | 803-541-6555 |
| Generations Unlimited Senior Center | | 803-259-4599 |
| Local Motion Transportation Service | | 803-541-1197 |
| SC Employment Security Commission | | 803-259-7116 |
