1 definition found alpharetta - U.S. Gazetteer (1990) : Alpharetta, GA (city, FIPS 1696) Location: 34.06888 N, 84.27200 W Population (1990): 13002 (5887 housing units) Area: 49.3 sq km (land), 0.0 sq km (water) Zip code(s): 30201, 30202