8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Reed Creek | 1 | 2,853 | 2,751 | 0.6% | 120 | 23.81 | CDP |
| Royston | 2 | 2,686 | 2,646 | 0.3% | 819 | 3.28 | City |
| Gumlog | 3 | 2,228 | 2,336 | 0.22% | 165 | 13.48 | CDP |
| Lavonia | 4 | 2,191 | 2,131 | 0.55% | 486 | 4.51 | City |
| Franklin Springs | 5 | 1,172 | 1,159 | 0.26% | 538 | 2.18 | City |
| Carnesville | 6 | 722 | 711 | 0.28% | 230 | 3.14 | City |
| Canon | 7 | 718 | 648 | 1.99% | 230 | 3.12 | City |
| Avalon | 8 | 240 | 234 | 0.42% | 136 | 1.77 | Town |
Reed Creek is the largest city in Franklin County, with a population of 2,853.
Avalon is the smallest city in Franklin County.
There are 8 cities in Franklin County, Georgia.