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
Population
City
499532,274Ontonagon
49912859Bruce Crossing
49925647Ewen
49948599Mass City
49971415White Pine
49910239Bergland
49960226Rockland
49929219Greenland

Zip Codes in Ontonagon County, Michigan by Population (2024)