| Locality | Post Code |
|---|---|
| Bois Blanc Island, Mackinac | 49775 |
| Cedarville, Mackinac | 49719 |
| Curtis, Mackinac | 49820 |
| Engadine, Mackinac | 49827 |
| Germfask, Mackinac | 49836 |
| Gould City, Mackinac | 49838 |
| Hessel, Mackinac | 49745 |
| Mackinac Island, Mackinac | 49757 |
| Moran, Mackinac | 49760 |
| Naubinway, Mackinac | 49762 |
| Pickford, Mackinac | 49774 |
| Pointe Aux Pins, Mackinac | 49775 |
| Rudyard, Mackinac | 49780 |
| Saint Ignace, Mackinac | 49781 |