There are 8 zip codes in Lyon County, Kansas. The most populated is 66801, located in Emporia. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
6680127,416Emporia
668351,268Americus
668651,046Olpe
66854800Hartford
66868678Reading
66833642Allen
66864478Neosho Rapids
66830272Admire

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