14 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Reed Creek | 1 | 2,853 | 2,751 | 0.6% | 120 | 24 | CDP |
| Royston | 2 | 2,669 | 2,650 | 0.15% | 814 | 3 | City |
| Royston | 3 | 2,669 | 2,649 | 0.15% | 814 | 3 | City |
| Gumlog | 4 | 2,228 | 2,336 | 0.22% | 165 | 13 | CDP |
| Lavonia | 5 | 2,173 | 2,131 | 0.37% | 482 | 5 | City |
| Lavonia | 6 | 2,173 | 2,132 | 0.37% | 482 | 5 | City |
| Franklin Springs | 7 | 1,187 | 1,154 | 0.51% | 545 | 2 | City |
| Franklin Springs | 8 | 1,187 | 1,154 | 0.51% | 545 | 2 | City |
| Carnesville | 9 | 785 | 714 | 1.82% | 250 | 3 | City |
| Carnesville | 10 | 785 | 714 | 1.82% | 250 | 3 | City |
| Canon | 11 | 719 | 646 | 1.99% | 230 | 3 | City |
| Canon | 12 | 719 | 648 | 1.99% | 230 | 3 | City |
| Avalon | 13 | 244 | 232 | 0.83% | 138 | 2 | Town |
| Avalon | 14 | 244 | 232 | 0.83% | 138 | 2 | Town |
Reed Creek is the largest city in Franklin County, with a population of 2,853.
Avalon is the smallest city in Franklin County, with a population of 244.
There are 14 cities in Franklin County, Georgia.