| Business | Phone |
| Gilmer City Inspection Dept 414 S Wood St, Gilmer 75644 | (903) 843-8200 |
| Gilmer City Office 100 W Tyler St, Gilmer 75644 | (903) 843-2861 |
| Gilmer City Offices 110 Buffalo St, Gilmer 75644 | (903) 843-2553 |
| Gilmer City Offices 316 W Harrison St, Gilmer 75644 | (903) 843-8117 |
| Gilmer City Waste Water Plant Pine Acres, Gilmer 75644 | (903) 797-6130 |