What is what area code is 770?

Area code 770 is a North American telephone area code for metropolitan Atlanta, Georgia, and its surrounding areas. It was established in 1995 as a split from area code 404 and currently serves the suburbs of Atlanta, including Marietta, Roswell, Sandy Springs, and Smyrna. Area code 770 is also used in parts of northern Georgia, such as Gainesville and Rome. The area code is located within the Eastern Time Zone.