There are 15 zip codes in Allegan County, Michigan. The most populated is 49423, located in Holland. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4942346,467Holland
4901018,457Allegan
4908015,516Plainwell
4934813,280Wayland
4932310,852Dorr
4940810,582Fennville
4907810,464Otsego
494198,483Hamilton
493283,962Hopkins
493443,896Shelbyville
494503,062Pullman
494532,746Saugatuck
490702,175Martin
49406781Douglas
49335140Moline

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