| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Benton | 1 | 1,465 | 1,518 | -0.75% | 483 | 3 | Town |
| Copperhill | 2 | 463 | 434 | 1.09% | 262 | 2 | City |
| Ducktown | 3 | 438 | 459 | -0.68% | 166 | 3 | City |
Benton is the largest city in Polk County, with a population of 1,465.
Ducktown is the smallest city in Polk County, with a population of 438.
There are 3 cities in Polk County, Tennessee.