Post Offices List in Adair County, Missouri:
| Brashear Post Office | 201 S King St, Brashear, MO 63533 |
| Greentop Post Office | 868 Main St, Greentop, MO 63546 |
| Kirksville Post Office | 210 E Jefferson St, Kirksville, MO 63501 |
| Novinger Post Office | 214 S Frankford Ave, Novinger, MO 63559 |