4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jasper | 1 | 3,674 | 3,616 | 0.27% | 373 | 10 | Town |
| South Pittsburg | 2 | 2,909 | 3,089 | -1.02% | 354 | 8 | City |
| Kimball | 3 | 1,681 | 1,552 | 1.33% | 317 | 5 | Town |
| Powells Crossroads | 4 | 1,293 | 1,296 | 0% | 264 | 5 | Town |
Jasper is the largest city in Marion County, with a population of 3,674.
Powells Crossroads is the smallest city in Marion County, with a population of 1,293.
There are 4 cities in Marion County, Tennessee.