| Locality | Postal Code |
|---|---|
| Belden, Mountrail | 58784 |
| Berthold, Mountrail | 58718 |
| Blaisdell, Mountrail | 58718 |
| Charlson, Mountrail | 58763 |
| Lostwood, Mountrail | 58784 |
| Lunds Valley, Mountrail | 58784 |
| Manitou, Mountrail | 58776 |
| New Town, Mountrail | 58763 |
| Palermo, Mountrail | 58769 |
| Parshall, Mountrail | 58770 |
| Plaza, Mountrail | 58771 |
| Powers Lake, Mountrail | 58773 |
| Ross, Mountrail | 58776 |
| Sanish, Mountrail | 58763 |
| Stanley, Mountrail | 58784 |
| Wabek, Mountrail | 58771 |
| White Earth, Mountrail | 58794 |