| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Kingston | 1 | 6,337 | 6,076 | 0.6% | 869 | 7 | City |
| Harriman | 2 | 6,246 | 5,933 | 0.87% | 595 | 10 | City |
| Rockwood | 3 | 5,652 | 5,431 | 0.8% | 705 | 8 | City |
| Oliver Springs | 4 | 3,462 | 3,287 | 0.84% | 599 | 6 | Town |
Kingston is the largest city in Roane County, with a population of 6,337.
Oliver Springs is the smallest city in Roane County, with a population of 3,462.
There are 4 cities in Roane County, Tennessee.