| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jasper | 1 | 3,647 | 3,613 | 0.3% | 370 | 10 | Town |
| South Pittsburg | 2 | 2,899 | 3,088 | -0.96% | 353 | 8 | City |
| Kimball | 3 | 1,652 | 1,548 | 1.16% | 311 | 5 | Town |
| Powells Crossroads | 4 | 1,296 | 1,291 | 0% | 265 | 5 | Town |
Jasper is the largest city in Marion County, with a population of 3,647.
Powells Crossroads is the smallest city in Marion County, with a population of 1,296.
There are 4 cities in Marion County, Tennessee.