4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Kingston | 1 | 6,389 | 5,961 | 1.36% | 876 | 7.29 | City |
| Harriman | 2 | 6,317 | 5,952 | 1.17% | 602 | 10.50 | City |
| Rockwood | 3 | 5,759 | 5,449 | 1.09% | 719 | 8.02 | City |
| Oliver Springs | 4 | 3,460 | 3,304 | 0.9% | 599 | 5.78 | Town |
Kingston is the largest city in Roane County, with a population of 6,389.
Oliver Springs is the smallest city in Roane County.
There are 4 cities in Roane County, Tennessee.