| Post Office | Guymon |
| Division | Texas |
| Pincode | 73942 |
| Post Office | Hooker |
| Division | Texas |
| Pincode | 73945 |
| Post Office | Texhoma |
| Division | Texas |
| Pincode | 73949 |
| Post Office | Goodwell |
| Division | Texas |
| Pincode | 73939 |
| Post Office | Tyrone |
| Division | Texas |
| Pincode | 73951 |
| Post Office | Hardesty |
| Division | Texas |
| Pincode | 73944 |