| Business | Phone |
| County Data Processing 200 S Crockett St, Sherman 75090 | (903) 813-4300 |
| Grayson Cnty Justice Of Peace 200 S Crockett St # 111a, Sherman 75090 | (903) 813-4346 |
| Grayson County Addressing Sherman 75090 | (903) 813-4231 |
| Grayson County Appraisal 205 N Travis St, Sherman 75090 | (903) 893-9673 |
| Grayson County Auto Attendant Sherman 75090 | (903) 813-4200 |
| Grayson County Barn 1312 E Fm 1417, Sherman 75090 | (903) 893-2033 |
| Grayson County Building Mntnc 213 W Cherry St, Sherman 75090 | (903) 813-4255 |
| Grayson County Commissioners 100 W Houston St # 3, Sherman 75090 | (903) 813-4216 |
| Grayson County Constable 200 S Crockett St # 111, Sherman 75090 | (903) 813-4342 |
| Grayson County Courthouse 100 W Houston St, Sherman 75090 | (903) 813-4200 |
| Grayson County Data Processing Sherman 75090 | (903) 813-4380 |
| Grayson County Human Resources 100 W Houston St, Sherman 75090 | (903) 813-4264 |
| Grayson County Justice Center 200 S Crockett St, Sherman 75090 | (903) 813-4200 |
| Grayson County Litter Control 100 W Houston St # G2, Sherman 75090 | (903) 813-4739 |
| Grayson County Planning Mgr 100 W Houston St, Sherman 75090 | (903) 813-4247 |
| Grayson County Purchasing 100 W Houston St # 3, Sherman 75090 | (903) 813-4259 |
| Grayson County Sanitarian 100 W Houston St, Sherman 75090 | (903) 813-4217 |
| Grayson County Veterans Svc 100 W Houston St # G2, Sherman 75090 | (903) 813-4253 |
| Grayson County Voter Register 100 W Houston St # 11, Sherman 75090 | (903) 893-8683 |
| Grayson Cty Veh Registration 100 W Houston St, Sherman 75090 | (903) 813-4225 |
| Texoma Council Of Governments 1117 Gallagher Dr # 300, Sherman 75090 | (903) 893-2161 |