12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| South Fulton | 1 | 112,943 | 108,074 | 0.84% | 1,215 | 93 | City |
| South Fulton | 2 | 112,943 | 108,241 | 0.84% | 1,215 | 93 | City |
| Peachtree City | 3 | 41,355 | 38,255 | 1.46% | 1,645 | 25 | City |
| Peachtree City | 4 | 41,355 | 38,369 | 1.46% | 1,645 | 25 | City |
| Fayetteville | 5 | 20,770 | 18,942 | 1.72% | 1,602 | 13 | City |
| Fayetteville | 6 | 20,770 | 19,015 | 1.72% | 1,602 | 13 | City |
| Tyrone | 7 | 8,116 | 7,678 | 0.97% | 649 | 13 | Town |
| Tyrone | 8 | 8,116 | 7,726 | 0.97% | 649 | 13 | Town |
| Chattahoochee Hills | 9 | 3,571 | 2,949 | 3.48% | 61 | 58 | City |
| Chattahoochee Hills | 10 | 3,571 | 2,971 | 3.48% | 61 | 58 | City |
| Brooks | 11 | 587 | 570 | 0.51% | 136 | 4 | Town |
| Brooks | 12 | 587 | 570 | 0.51% | 136 | 4 | Town |
South Fulton is the largest city in Fayette County, with a population of 112,943.
Brooks is the smallest city in Fayette County, with a population of 587.
There are 12 cities in Fayette County, Georgia.