There are 6 zip codes in Lake County, Michigan. The most populated is 49304, located in Baldwin. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
49304Baldwin4,614
49644Irons1,920
49656Luther1,731
49402Branch1,517
49623Chase1,193
49642Idlewild1,013

Lake County, Michigan Zip Codes by Population (2024)