| Locality | Post Code |
|---|---|
| Audubon, Becker | 56511 |
| Callaway, Becker | 56521 |
| Detroit Lakes, Becker | 56501 |
| Frazee, Becker | 56544 |
| Lake Park, Becker | 56554 |
| Ogema, Becker | 56569 |
| Osage, Becker | 56570 |
| Ponsford, Becker | 56575 |
| Richwood, Becker | 56577 |
| Rochert, Becker | 56578 |
| Snellman, Becker | 56570 |
| White Earth, Becker | 56591 |
| Wolf Lake, Becker | 56593 |