Mackinac Island, MI is a city located in Mackinac County, Michigan and has a land area of 4.35 square miles (11.27 km2). The water area for the city is 14.01 square miles or 36.29 km2. There is one unique zip code in Mackinac Island, Michigan and it is 49757. The area code(s) for Mackinac Island is 906.
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