There are 8 zip codes in Johnson County, Arkansas. The most populated is 72830, located in Clarksville. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
7283016,138Clarksville
728463,595Lamar
728402,404Hartman
72845950Knoxville
72832713Coal Hill
72839587Hagarville
72854512Ozone
72852140Oark
showing: 8 rows

Zip Codes in Johnson County, Arkansas by Population (2024)