There are 8 zip codes in Leavenworth County, Kansas. The most populated is 66048, located in Leavenworth. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
6604835,970Leavenworth
6608610,774Tonganoxie
6604310,684Lansing
6601210,295Bonner Springs
660079,601Basehor
660276,990Fort Leavenworth
660522,151Linwood
660201,848Easton

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