| Locality | Postal Code |
|---|---|
| Bahner, Pettis | 65350 |
| Beaman, Pettis | 65350 |
| Dresden, Pettis | 65301 |
| Georgetown, Pettis | 65301 |
| Green Ridge, Pettis | 65332 |
| Houstonia, Pettis | 65333 |
| Hughesville, Pettis | 65334 |
| Ionia, Pettis | 65335 |
| La Monte, Pettis | 65337 |
| Longwood, Pettis | 65334 |
| Mora, Pettis | 65345 |
| Nelson, Pettis | 65347 |
| Sedalia, Pettis | 65301 |
| Smithton, Pettis | 65350 |
| Springfork, Pettis | 65301 |
| Windsor, Pettis | 65360 |