There are 7 zip codes in Smith County, Kansas. The most populated is 66967, located in Smith Center. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
669672,017Smith Center
66951820Kensington
66952368Lebanon
67474211Portis
67628171Cedar
67638113Gaylord
6693274Athol

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