| Business | Phone |
| Grayson Cnty Juvenile Probate 86 Dyess St, Denison 75020 | (903) 786-6326 |
| Grayson County Juvenile Dtntn 86 Dyess St, Denison 75020 | (903) 786-2929 |
| Grayson County Juvenile Office 101 W Woodard St, Denison 75021 | (903) 465-0030 |
| Grayson County Road Camp 1196 Us Highway 69, Denison 75021 | (903) 465-3113 |
| Grayson County Vehicle Rgstrn 101 W Woodard St, Denison 75021 | (903) 465-2101 |
| Grayson County Veterans Svc 101 W Woodard St, Denison 75021 | (903) 465-5505 |