High Quality Content by WIKIPEDIA articles! Gainesville is a city in and the county seat of Hall County, Georgia, United States. As of the 2010 census, the city had a population of 33,804. Because of its large number of poultry processing plants, it is often called the chicken capital of the world. Gainesville is the principal city of and is included in the Gainesville, Georgia Metropolitan Statistical Area, which is included in the Atlanta-Sandy Springs-Gainesville, Georgia-Alabama (part) Combined Statistical Area.