There are 18 zip codes in Clay County, Missouri. The most populated is 64118, located in Kansas City. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
6411842,897Kansas City
6406837,237Liberty
6411932,294Kansas City
6415528,138Kansas City
6415721,610Kansas City
6411617,284Kansas City
6406015,888Kearney
6402415,158Excelsior Springs
6411715,017Kansas City
6408913,818Smithville
641567,288Kansas City
641587,091Kansas City
640484,461Holt
64161347Kansas City
64167340Kansas City
64166296Kansas City
64072293Missouri City
64165273Kansas City

Zip Codes in Clay County, Missouri by Population (2024)