6 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 63501 | Kirksville | 21,218 |
| 63546 | Greentop | 1,340 |
| 63559 | Novinger | 1,258 |
| 63544 | Green Castle | 1,159 |
| 63533 | Brashear | 1,141 |
| 63540 | Gibbs | 418 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Adair County, Missouri (US Census).