There are 3 zip codes in Union County, Tennessee. The most populated is 37807, located in Maynardville. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
3780711,008Maynardville
377793,376Luttrell
378662,090Sharps Chapel
showing: 3 rows

Zip Codes in Union County, Tennessee by Population (2024)