| Business | Phone |
| Mackinac Island City Adm Market St, Mackinac Island 49757 | (906) 847-6556 |
| Mackinac Island City Bldg Dept Market St, Mackinac Island 49757 | (906) 847-4035 |
| Mackinac Island Clerk 1 Market St, Mackinac Island 49757 | (906) 847-3702 |
| Mackinac Island Waste Water Stonecliff Rd, Mackinac Island 49757 | (906) 847-3278 |
| Water Filtration Plant Huron St, Mackinac Island 49757 | (906) 847-6060 |