There are 10 zip codes in Bay County, Michigan. The most populated is 48706, located in Bay City. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4870639,182Bay City
4870825,857Bay City
4873211,204Essexville
486506,462Pinconning
486116,135Auburn
486344,613Linwood
486313,924Kawkawlin
487471,720Munger
486131,039Bentley
487100University Center

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