| Business | Phone |
| Cable Tv 109 N Main St, Hartford 53027 | (262) 673-8233 |
| City Garage 710 W Sumner St, Hartford 53027 | (262) 673-8286 |
| Erin Building Inspector 1846 State Road 83, Hartford 53027 | (262) 673-0970 |
| Erin Town Garage 1846 State Road 83, Hartford 53027 | (262) 673-3702 |
| Town Garage 3360 County Road K, Hartford 53027 | (262) 673-6729 |
| Town Of Hartford 3360 County Road K, Hartford 53027 | (262) 673-7214 |
| Hartford Administrator 109 N Main St, Hartford 53027 | (262) 673-8204 |
| Hartford Assessment 109 N Main St, Hartford 53027 | (262) 673-8255 |
| Hartford Building Inspection 109 N Main St, Hartford 53027 | (262) 673-8254 |
| Hartford City Office 109 N Main St, Hartford 53027 | (262) 673-8298 |
| Hartford City Planning 109 N Main St, Hartford 53027 | (262) 673-8248 |
| Hartford City Taxi 125 N Rural St, Hartford 53027 | (262) 673-8223 |
| Hartford City Wastewater 1600 Liberty Ave, Hartford 53027 | (262) 673-2423 |
| Hartford Clerk 109 N Main St, Hartford 53027 | (262) 673-8202 |
| Hartford Electric Supt 116 W Wisconsin St, Hartford 53027 | (262) 673-8236 |
| Hartford Electric Supt 620 W Sumner St, Hartford 53027 | (262) 673-8236 |
| Hartford Emergency Squad 109 N Main St, Hartford 53027 | (262) 673-8209 |
| Hartford Harthaven Elderly 33 High St, Hartford 53027 | (262) 673-4018 |
| Hartford Senior Watch 125 N Rural St, Hartford 53027 | (262) 673-8222 |
| Hartford Streets Supt 710 W Sumner St, Hartford 53027 | (262) 673-8285 |
| Hartford Weatherization 109 N Main St, Hartford 53027 | (262) 673-8215 |