| Locality | Post Code |
|---|---|
| Barton City, Alcona | 48705 |
| Black River, Alcona | 48721 |
| Curran, Alcona | 48728 |
| Glennie, Alcona | 48737 |
| Greenbush, Alcona | 48738 |
| Harrisville, Alcona | 48740 |
| Hubbard Lake, Alcona | 49747 |
| Lincoln, Alcona | 48742 |
| Mikado, Alcona | 48745 |
| South Branch, Alcona | 48761 |
| Spruce, Alcona | 48762 |