16 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sandy Springs | 1 | 104,828 | 108,106 | -0.64% | 2,783 | 38 | City |
| Sandy Springs | 2 | 104,828 | 108,212 | -0.64% | 2,783 | 38 | City |
| Roswell | 3 | 92,049 | 92,825 | -0.19% | 2,261 | 41 | City |
| Roswell | 4 | 92,049 | 92,939 | -0.19% | 2,261 | 41 | City |
| Alpharetta | 5 | 67,602 | 65,811 | 0.49% | 2,513 | 27 | City |
| Alpharetta | 6 | 67,602 | 65,966 | 0.49% | 2,513 | 27 | City |
| Duluth | 7 | 33,457 | 31,954 | 0.9% | 3,300 | 10 | City |
| Duluth | 8 | 33,457 | 31,955 | 0.9% | 3,300 | 10 | City |
| Union City | 9 | 28,473 | 26,858 | 0.99% | 1,447 | 20 | City |
| Union City | 10 | 28,473 | 27,082 | 0.99% | 1,447 | 20 | City |
| Fairburn | 11 | 17,443 | 16,480 | 1.02% | 1,032 | 17 | City |
| Fairburn | 12 | 17,443 | 16,563 | 1.02% | 1,032 | 17 | City |
| Hapeville | 13 | 6,749 | 6,557 | 0.55% | 2,837 | 2 | City |
| Hapeville | 14 | 6,749 | 6,564 | 0.55% | 2,837 | 2 | City |
| Palmetto | 15 | 5,243 | 5,062 | 0.58% | 442 | 12 | City |
| Palmetto | 16 | 5,243 | 5,090 | 0.58% | 442 | 12 | City |
Sandy Springs is the largest city in Fulton County, with a population of 104,828.
Palmetto is the smallest city in Fulton County, with a population of 5,243.
There are 16 cities in Fulton County, Georgia.