| Locality | Post Code |
|---|---|
| Adair, Adair | 63533 |
| Brashear, Adair | 63533 |
| Connelsville, Adair | 63559 |
| Gibbs, Adair | 63540 |
| Greentop, Adair | 63546 |
| Kirksville, Adair | 63501 |
| La Plata, Adair | 63549 |
| Low Ground, Adair | 63559 |
| Martinstown, Adair | 63559 |
| Midland, Adair | 63559 |
| Millard, Adair | 63501 |
| Nind, Adair | 63501 |
| Novinger, Adair | 63559 |
| Pure Air, Adair | 63559 |
| Shibleys Point, Adair | 63559 |
| Sperry, Adair | 63501 |
| Spring Lake, Adair | 63501 |
| Stahl, Adair | 63559 |
| Sublette, Adair | 63546 |
| Willmathsville, Adair | 63546 |
| Yarrow, Adair | 63501 |
| Youngstown, Adair | 63559 |