| Locality | Post Code |
|---|---|
| Blanchard, Traill | 58009 |
| Buxton, Traill | 58218 |
| Caledonia, Traill | 58219 |
| Clifford, Traill | 58016 |
| Cummings, Traill | 58223 |
| Galesburg, Traill | 58035 |
| Grandin, Traill | 58038 |
| Hatton, Traill | 58240 |
| Hillsboro, Traill | 58045 |
| Kelso, Traill | 58045 |
| Mayville, Traill | 58257 |
| Portland, Traill | 58274 |
| Reynolds, Traill | 58275 |