There are 8 zip codes in Sullivan County, Tennessee. The most populated is 37660, located in Kingsport. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
3766039,481Kingsport
3762038,245Bristol
3766428,804Kingsport
3761714,519Blountville
3766313,658Kingsport
3761812,792Bluff City
376868,848Piney Flats
376655,540Kingsport
showing: 8 rows

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