Cumming is a city in Forsyth County, Georgia, United States, and the sole incorporated area in the county. It is a suburban city, and part of the Atlanta metropolitan area. In the 2020 census, the population is 7,318, up from 5,430 in 2010. Surrounding unincorporated areas with a Cumming mailing address have a population of approximately 100,000. Cumming is the county seat of Forsyth County.