There are 11 zip codes in Eaton County, Michigan. The most populated is 48917, located in Lansing. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4891732,379Lansing
4881320,165Charlotte
4883719,913Grand Ledge
4882715,999Eaton Rapids
490216,339Bellevue
488216,127Dimondale
488764,602Potterville
490764,112Olivet
490962,976Vermontville
488901,976Sunfield
488611,839Mulliken

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