4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jefferson City | 1 | 9,317 | 8,404 | 1.66% | 1,329 | 7 | City |
| Dandridge | 2 | 4,082 | 3,359 | 3.05% | 669 | 6 | Town |
| White Pine | 3 | 2,603 | 2,545 | 0.39% | 906 | 3 | Town |
| New Market | 4 | 1,442 | 1,364 | 0.91% | 341 | 4 | Town |
Jefferson City is the largest city in Jefferson County, with a population of 9,317.
New Market is the smallest city in Jefferson County, with a population of 1,442.
There are 4 cities in Jefferson County, Tennessee.