Sumner Zip Codes - Gratiot County MI

Sumner, MI Zip Code Map

Sumner, MI is a city located in Gratiot County, Michigan and has a land area of 31.02 square miles (80.34 km2). The water area for the city is 0.29 square miles or 0.75 km2. There is one unique zip code in Sumner, Michigan and it is 48889. The area code(s) for Sumner is 989.

Zip Codes for Sumner, MI (1)
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48889 Sumner Gratiot

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