5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Eastpoint | 1 | 2,696 | 2,521 | 0.9% | 362 | 7.44 | CDP |
| Apalachicola | 2 | 2,462 | 2,337 | 1.03% | 1,279 | 1.93 | City |
| Carrabelle | 3 | 2,231 | 2,608 | -3.25% | 466 | 4.79 | City |
| St. George Island | 4 | 1,212 | 1,006 | 7.07% | 255 | 4.75 | CDP |
| Lake Mystic | 5 | 536 | 601 | 0.37% | 118 | 4.54 | CDP |
Eastpoint is the largest city in Franklin County, with a population of 2,696.
Lake Mystic is the smallest city in Franklin County.
There are 5 cities in Franklin County, Florida.