alpharetta,_georgia | areatotal | 554 (square kilometres) <tsp> alpharetta,_georgia | populationdensity | 9926 (inhabitants per square kilometre) <sep> alpharetta is a city in northern fulton county, georgia, united states, and is a part of the atlanta metropolitan area as of the 2020 us census, alpharetta's population was 65,818; in 2010, the population was 57,551 
there are 992.6 people per square kilometres in alpharetta. georgia. which has a total area of 55.4 square kilometres.no information