4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jasper | 1 | 3,664 | 3,616 | 0.25% | 372 | 10 | Town |
| South Pittsburg | 2 | 2,939 | 3,089 | -1.01% | 358 | 8 | City |
| Kimball | 3 | 1,659 | 1,552 | 1.28% | 312 | 5 | Town |
| Powells Crossroads | 4 | 1,293 | 1,296 | -0.08% | 264 | 5 | Town |
Jasper is the largest city in Marion County, with a population of 3,664.
Powells Crossroads is the smallest city in Marion County, with a population of 1,293.
There are 4 cities in Marion County, Tennessee.