alpharetta,_georgia | areatotal | 554 (square kilometres) <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 
the total area of alpharetta. georgia is 55.4 sqkm.no information