Frontier Zip Codes - Hillsdale County MI

Frontier, MI Zip Code Map

Frontier, MI is a city located in Hillsdale County, Michigan and has a land area of 0.00 square miles (0.00 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Frontier, Michigan and it is 49239. The area code(s) for Frontier is 517.

Zip Codes for Frontier, MI (1)
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49239 Frontier Hillsdale

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