| Post Office | Detroit Lakes |
| Division | Becker |
| Zipcode | 56501 |
| Post Office | Frazee |
| Division | Becker |
| Zipcode | 56544 |
| Post Office | Lake Park |
| Division | Becker |
| Zipcode | 56554 |
| Post Office | Waubun |
| Division | Becker |
| Zipcode | 56589 |
| Post Office | Audubon |
| Division | Becker |
| Zipcode | 56511 |
| Post Office | Ogema |
| Division | Becker |
| Zipcode | 56569 |
| Post Office | Osage |
| Division | Becker |
| Zipcode | 56570 |
| Post Office | Callaway |
| Division | Becker |
| Zipcode | 56521 |
| Post Office | Ponsford |
| Division | Becker |
| Zipcode | 56575 |
| Post Office | Rochert |
| Division | Becker |
| Zipcode | 56578 |