6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jefferson City | 1 | 9,165 | 8,404 | 1.69% | 1,307 | 7 | City |
| Dandridge | 2 | 3,961 | 3,359 | 3.12% | 650 | 6 | Town |
| Strawberry Plains | 3 | 3,700 | 1,919 | 7.15% | 884 | 4 | CDP |
| White Pine | 4 | 2,593 | 2,545 | 0.35% | 903 | 3 | Town |
| New Market | 5 | 1,429 | 1,364 | 0.92% | 338 | 4 | Town |
| Fairgarden | 6 | 494 | 406 | -0.4% | 285 | 2 | CDP |
Jefferson City is the largest city in Jefferson County, with a population of 9,165.
Fairgarden is the smallest city in Jefferson County, with a population of 494.
There are 6 cities in Jefferson County, Tennessee.