There are 8 zip codes in Allamakee County, Iowa. The most populated is 52172, located in Waukon. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
521725,982Waukon
521623,548Postville
521592,412Monona
521511,869Lansing
52160994New Albin
52146866Harpers Ferry
52170504Waterville
52140453Dorchester

Zip Codes in Allamakee County, Iowa by Population (2024)