| City | County | 2026 Pop. ↓ |
|---|---|---|
| Johnson City | Washington County | 75,575 |
| Jackson | Madison County | 69,551 |
| Jefferson City | Jefferson County | 9,254 |
| Jonesborough | Washington County | 7,193 |
| Jasper | Marion County | 3,647 |
| Jacksboro | Campbell County | 2,222 |
| Jamestown | Fentress County | 2,151 |
| Jellico | Campbell County | 2,122 |
| John Sevier | Knox County | 1,215 |
| Jacks Creek | Chester County | 17 |