| Business | Phone |
| Harris County Landfill 4070 Barnes Mill Rd, Hamilton 31811 | (706) 582-2982 |
| Harris Cnty Senior Citizen Ctr 10245 Ga Highway 116, Hamilton 31811 | (706) 628-5587 |
| Harris Cnty Superior Ct-Rl Est 102 N College St, Hamilton 31811 | (706) 628-5570 |
| Harris County Building Inspctr 125 Barnes Mill Rd, Hamilton 31811 | (706) 628-4700 |
| Harris County Commissioners 104 N College St, Hamilton 31811 | (706) 628-4958 |
| Harris County Coroner 102 N College St, Hamilton 31811 | (706) 628-7493 |
| Harris County District Attrny 102 N College St, Hamilton 31811 | (706) 628-4080 |
| Harris County Environmentalist 210 Forrest Hill Dr, Hamilton 31811 | (706) 628-5037 |
| Harris County Extension Svc 121 N College St, Hamilton 31811 | (706) 628-4824 |
| Harris County Fire Svc 9907 Highway 116, Hamilton 31811 | (706) 628-7161 |
| Harris County Nursing Div 210 Forest Hill Dr, Hamilton 31811 | (706) 628-5137 |
| Harris County Registrar Office 104 N College St, Hamilton 31811 | (706) 628-5210 |
| Harris County Superior Clerk 102 N College St, Hamilton 31811 | (706) 628-4944 |
| Harris County Vehicle Mntnc 10070 Ga Highway 116, Hamilton 31811 | (706) 628-5847 |
| Harris County Vehicle Tags 102 N College St, Hamilton 31811 | (706) 628-5399 |