Birch Run, MI is a city located in Saginaw County, Michigan and has a land area of 64.78 square miles (167.78 km2). The water area for the city is 0.14 square miles or 0.36 km2. There is one unique zip code in Birch Run, Michigan and it is 48415. The area code(s) for Birch Run is 989.
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