6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| South Fulton | 1 | 112,726 | 108,211 | 0.81% | 1,213 | 92.95 | City |
| Peachtree City | 2 | 41,409 | 38,369 | 1.49% | 1,648 | 25.13 | City |
| Fayetteville | 3 | 20,793 | 19,017 | 1.74% | 1,604 | 12.96 | City |
| Tyrone | 4 | 8,098 | 7,725 | 0.94% | 648 | 12.51 | Town |
| Chattahoochee Hills | 5 | 3,620 | 2,972 | 3.72% | 62 | 58.18 | City |
| Brooks | 6 | 579 | 568 | 0.35% | 134 | 4.32 | Town |
South Fulton is the largest city in Fayette County, with a population of 112,726.
Brooks is the smallest city in Fayette County.
There are 6 cities in Fayette County, Georgia.