| Locality | Post Code |
|---|---|
| Almont, Morton | 58520 |
| Blue Grass, Morton | 58563 |
| Breien, Morton | 58570 |
| Eagles Nest, Morton | 58631 |
| Fallon, Morton | 58535 |
| Flasher, Morton | 58535 |
| Fort Rice, Morton | 58554 |
| Freda, Morton | 58535 |
| Glen Ullin, Morton | 58631 |
| Hebron, Morton | 58638 |
| Huff, Morton | 58554 |
| Judson, Morton | 58563 |
| Lark, Morton | 58535 |
| Mandan, Morton | 58554 |
| New Salem, Morton | 58563 |
| Saint Anthony, Morton | 58566 |
| Solen, Morton | 58570 |