Madison is a city in Morgan County, Georgia, United States. It is part of the Atlanta-Athens-Clarke-Sandy Springs Combined Statistical Area. The population was 4,447 at the 2020 census, up from 3,979 in 2010. The city is the county seat of Morgan County and the site of the Morgan County Courthouse.

Morgan County is a county located in the north central Piedmont region and the lake country region of the U.S. state of Georgia. As of the 2020 census, the population was 20,097. The county seat is Madison.