There are 7 zip codes in Allen County, Kansas. The most populated is 66749, located in Iola. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
667497,290Iola
667482,883Humboldt
66755864Moran
66751653La Harpe
66732293Elsmore
66772234Savonburg
6674229Gas
showing: 7 rows

Zip Codes in Allen County, Kansas by Population (2024)