10 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Johnson City | Washington County | 74,892 |
| Jackson | Madison County | 69,854 |
| Jefferson City | Jefferson County | 9,317 |
| Jonesborough | Washington County | 7,161 |
| Jasper | Marion County | 3,674 |
| Jacksboro | Campbell County | 2,222 |
| Jamestown | Fentress County | 2,143 |
| Jellico | Campbell County | 2,107 |
| John Sevier | Knox County | 1,215 |
| Jacks Creek | Chester County | 17 |