The 678 area code belongs to the state of Georgia (GA) and some of the locations covered are Atlanta, Marietta and more:
|State||Larger cities in area code 678||Time Zone|
|Alpharetta, Atlanta Metro Area, Candler-McAfee, Duluth, Dunwoody, East Point, Forest Park, Gainesville, Griffin, Lawrenceville, Mableton, Marietta, Peachtree City, Redan, Roswell, Sandy Springs, Smyrna, Tucker
All cities (404)
All cities (770)
Current time is
|-- overlay complexes 404/678/470 and 770/678/470 --|
Area code 678 is an overlay NPA and was introduced on January 6, 1998 as a result of a high demand for new telephone numbers in the Atlanta area. The code overlays both 404 and 770 NPAs. This new code's introduction also resulted in the change from 7 to 10 digit local dialing in these areas.