Air conditioning Alpharetta is a city in Fulton County, Georgia, United States. As of the 2010 census, Alpharetta's population was 57,551. The estimated population in 2014 was 63,038. Alpharetta is a suburb of Atlanta. Alpharetta is located in the Atlanta metropolitan area. It is bordered to the north by Roswell, to the northeast by Johns Creek, to the southeast by Duluth, and to the southwest and west by Forsyth County. Air conditioning Alpharetta