5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Eastpoint | 1 | 2,696 | 2,521 | 0.9% | 362 | 7 | CDP |
| Carrabelle | 2 | 2,558 | 2,617 | -0.47% | 534 | 5 | City |
| Apalachicola | 3 | 2,491 | 2,338 | 1.22% | 1,294 | 2 | City |
| St. George Island | 4 | 1,212 | 1,006 | 7.07% | 255 | 5 | CDP |
| Lake Mystic | 5 | 536 | 601 | 0.37% | 118 | 5 | CDP |
Eastpoint is the largest city in Franklin County, with a population of 2,696.
Lake Mystic is the smallest city in Franklin County, with a population of 536.
There are 5 cities in Franklin County, Florida.