There are 5 zip codes in Johnson County, Tennessee. The most populated is 37683, located in Mountain City. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
37683Mountain City13,686
37640Butler3,517
37688Shady Valley945
37691Trade555
37680Laurel Bloomery454

Johnson County, Tennessee Zip Codes by Population (2024)