| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Johns Creek | 1 | 79,995 | 82,579 | -0.5% | 2,596 | 31 | City |
| Sugar Hill | 2 | 30,180 | 25,128 | 3.07% | 2,701 | 11 | City |
| Cumming | 3 | 13,183 | 7,352 | 5.51% | 1,748 | 8 | City |
Johns Creek is the largest city in Forsyth County, with a population of 79,995.
Cumming is the smallest city in Forsyth County, with a population of 13,183.
There are 3 cities in Forsyth County, Georgia.