| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mount Vernon | 1 | 2,633 | 2,492 | 0.88% | 611 | 4 | Town |
| Talco | 2 | 483 | 494 | -0.41% | 631 | 1 | City |
Mount Vernon is the largest city in Franklin County, with a population of 2,633.
Talco is the smallest city in Franklin County, with a population of 483.
There are 2 cities in Franklin County, Texas.