Area Code 404 January 18, 2021 allcitycodes Telephone Codes 0 Where is area code 404 located? Below you will find a list of all cities covered by area code 404 in Georgia. Alpharetta, GA Avondale Estates, GA Clarkston, GA Conley, GA Decatur, GA Forest Park, GA Pine Lake, GA Red Oak, GA Scottdale, GA Read more:Area Code 718Area Code 815Area Code 810Area Code 816Area Code 812Area Code 804Area Code 813Area Code 715Area Code 770Area Code 719