There are 8 zip codes in Ontonagon County, Michigan. The most populated is 49953, located in Ontonagon. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
49953Ontonagon2,274
49912Bruce Crossing859
49925Ewen647
49948Mass City599
49971White Pine415
49910Bergland239
49960Rockland226
49929Greenland219

Ontonagon County, Michigan Zip Codes by Population (2024)