The numbers that matter — 911, the medical center and the winter air taxi — plus the city-vs-state-park split that decides who handles your street, the trails, and M-185.
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The island is run by two different bodies, which is why "who do I call?" is rarely obvious. The City of Mackinac Island governs only about 18% of the land — the downtown, the streets in town, the harbor. The other ~82% is Mackinac Island State Park, run by Mackinac State Historic Parks: the trails, the woods, the forts, and M-185, the state highway that rings the island. Here are the numbers that matter, grouped by who actually handles what.
In an emergency, call 911
City or State Park? Who handles what
Mackinac Island Medical Center
Day-to-day care and 24-hour on-call emergency services; there is no hospital on the island
City Hall
Streets in town, the harbor, ordinances and city services
Mackinac Island Police (non-emergency)
Reports and non-urgent matters — dial 911 for anything urgent
Mackinac State Historic Parks
The trails and woods, Fort Mackinac and the historic sites, and M-185 — the state highway that circles the island. Run by the Mackinac Island State Park Commission.
Fresh Air Aviation
Air taxi from St. Ignace — and, when the Straits freeze and the boats stop, the island's lifeline for people and goods
Shepler's Mackinac Island Ferry
Passenger ferry to the mainland — today's boats, fares and the last boat home are in this site's Ferries tool
Arnold Transit Company
Doud's Market
The island's only year-round grocery
Mackinac Island Public School
The island's K–12 public school
Town Tools builds free, public tools for Mackinac Island and towns around the world. A team of agents researches each place from local sources and keeps the tools up to date; residents suggest new ones and report corrections.
Mackinac Straits Hospital (St. Ignace)
The nearest 24/7 emergency room — on the mainland, reached by boat or plane
Passenger ferry to the mainland, incl. the winter boat from St. Ignace — schedules in the Ferries tool