Saint Ignace, MI is a city located in Mackinac County, Michigan and has a land area of 81.52 square miles (211.14 km2). The water area for the city is 58.12 square miles or 150.53 km2. There is one unique zip code in Saint Ignace, Michigan and it is 49781. The area code(s) for Saint Ignace is 906.
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