| Locality | Post Code |
|---|---|
| Ardoch, Grand Forks | 58261 |
| Arvilla, Grand Forks | 58214 |
| Emerado, Grand Forks | 58228 |
| Fordville, Grand Forks | 58231 |
| Gilby, Grand Forks | 58235 |
| Grand Forks, Grand Forks | 58201, 58202, 58203, 58207 |
| Grand Forks Air Force Base, Grand Forks | 58205 |
| Hatton, Grand Forks | 58240 |
| Honeyford, Grand Forks | 58235 |
| Inkster, Grand Forks | 58233, 58244 |
| Johnstown, Grand Forks | 58235 |
| Kempton, Grand Forks | 58267 |
| Larimore, Grand Forks | 58251 |
| Manvel, Grand Forks | 58256 |
| McCanna, Grand Forks | 58251 |
| Mekinock, Grand Forks | 58258 |
| Niagara, Grand Forks | 58266 |
| Northwood, Grand Forks | 58267 |
| Orr, Grand Forks | 58244 |
| Reynolds, Grand Forks | 58275 |
| Thompson, Grand Forks | 58278 |