There are 9 zip codes in Hancock County, Iowa. The most populated is 50438, located in Garner. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
504383,989Garner
504232,490Britt
504471,261Kanawha
50449886Klemme
50457463Meservey
50439340Goodell
50430333Corwith
50484313Woden
50432261Crystal Lake

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