12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bartlett | 1 | 54,936 | 57,670 | -0.99% | 1,701 | 32.30 | City |
| Lakeland | 2 | 14,226 | 14,028 | 0.28% | 605 | 23.51 | City |
| Oakland | 3 | 11,462 | 9,027 | 4.44% | 1,095 | 10.47 | Town |
| Somerville | 4 | 3,591 | 3,426 | 0.93% | 265 | 13.57 | Town |
| Piperton | 5 | 2,946 | 2,303 | 4.58% | 108 | 27.20 | City |
| Rossville | 6 | 1,240 | 1,054 | 3.08% | 228 | 5.45 | Town |
| Moscow | 7 | 558 | 567 | -0.36% | 437 | 1.28 | City |
| Gallaway | 8 | 528 | 532 | -0.19% | 91 | 5.79 | City |
| Williston | 9 | 330 | 349 | -1.2% | 200 | 1.65 | City |
| Braden | 10 | 247 | 259 | -0.8% | 67 | 3.67 | Town |
| La Grange | 11 | 120 | 125 | -0.83% | 60 | 2.01 | Town |
| Dancyville | 12 | 40 | 37 | 8.11% | 28 | 1.45 | CDP |
Bartlett is the largest city in Fayette County, with a population of 54,936.
Dancyville is the smallest city in Fayette County.
There are 12 cities in Fayette County, Tennessee.