6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Johns Creek | 1 | 80,812 | 82,444 | -0.44% | 2,623 | 31 | City |
| Johns Creek | 2 | 80,812 | 82,585 | -0.44% | 2,623 | 31 | City |
| Sugar Hill | 3 | 29,463 | 25,075 | 3.02% | 2,637 | 11 | City |
| Sugar Hill | 4 | 29,463 | 25,135 | 3.02% | 2,637 | 11 | City |
| Cumming | 5 | 10,879 | 7,328 | 6.92% | 1,443 | 8 | City |
| Cumming | 6 | 10,879 | 7,359 | 6.92% | 1,443 | 8 | City |
Johns Creek is the largest city in Forsyth County, with a population of 80,812.
Cumming is the smallest city in Forsyth County, with a population of 10,879.
There are 6 cities in Forsyth County, Georgia.