1 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jefferson | 1 | 1,831 | 1,880 | -0.54% | 412 | 4.45 | City |
Jefferson is the largest city in Marion County, with a population of 1,831.
Jefferson is the smallest city in Marion County.
There is 1 city in Marion County, Texas.