6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Oak Ridge | 1 | 34,691 | 31,455 | 1.9% | 407 | 85.25 | City |
| Clinton | 2 | 10,518 | 10,065 | 0.87% | 905 | 11.63 | City |
| Karns | 3 | 4,981 | 3,755 | 7.14% | 1,669 | 2.98 | CDP |
| Norris | 4 | 1,630 | 1,605 | 0.31% | 196 | 8.33 | City |
| Briceville | 5 | 411 | 412 | 7.03% | 851 | 0.48 | CDP |
| Andersonville | 6 | 224 | 427 | -7.05% | 138 | 1.62 | CDP |
Oak Ridge is the largest city in Anderson County, with a population of 34,691.
Andersonville is the smallest city in Anderson County.
There are 6 cities in Anderson County, Tennessee.