| Business | Phone |
| Transportation-Resident Engr 410 Kremlin St, Enid 73701 | (580) 234-3223 |
| Robert M Greer Center 2501 Delaware, Enid 73701 | (580) 213-2700 |
| Osu Extension Center 205 W Maple Ave # 510, Enid 73701 | (580) 233-5295 |
| Osu Extension Center 316 E Oxford Ave, Enid 73701 | (580) 237-7677 |
| Osu Extension Center American Standard Life Bldg, Enid 73701 | (580) 233-5295 |