| Locality | Post Code |
|---|---|
| Breckenridge, Midland | 48615 |
| Coleman, Midland | 48618 |
| Edenville, Midland | 48620 |
| Freeland, Midland | 48623 |
| Hope, Midland | 48628 |
| Merrill, Midland | 48637 |
| Midland, Midland | 48640, 48642, 48674 |
| Rhodes, Midland | 48652 |
| Sanford, Midland | 48657 |
| Shepherd, Midland | 48883 |
| Wheeler, Midland | 48662 |