There are 7 zip codes in Isabella County, Michigan. The most populated is 48858, located in Mount Pleasant. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4885843,036Mount Pleasant
488836,692Shepherd
488935,274Weidman
493102,952Blanchard
488592,395Mount Pleasant
488781,510Rosebush
48896268Winn

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