There are 6 zip codes in Iron County, Michigan. The most populated is 49935, located in Iron River. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
499355,943Iron River
499204,207Crystal Falls
49915576Caspian
49927390Gaastra
49902210Alpha
49903194Amasa

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