Atlanta, Georgia

Where Is Area Code 770?

Area code 770 is in northern Georgia and serves many of Atlanta’s suburbs and nearby communities. It covers much of the metro Atlanta area outside the city of Atlanta itself. It is commonly associated with suburban and exurban parts of the region.

Area code 770 serves cities and communities such as Marietta, Roswell, Alpharetta, Sandy Springs, Smyrna, Duluth, Lawrenceville, Decatur, and Stone Mountain. It is widely used in counties around Atlanta, including Cobb, Gwinnett, DeKalb, Fulton, Clayton, and Cherokee counties. The exact service area overlaps with other Atlanta-area codes because of overlay dialing.

The area includes well-known places around metropolitan Atlanta, including Stone Mountain, parts of the Chattahoochee River corridor, and major suburban business centers. Hartsfield-Jackson Atlanta International Airport is in the broader metro region, although Atlanta itself is primarily tied to area code 404 along with overlay codes.

History of Area Code 770

Area code 770 began service on August 1, 1995. It was created in a split from area code 404 as the Atlanta region grew and needed more phone numbers. The split moved most suburban areas outside the city of Atlanta into 770, while Atlanta kept 404.

Area code 770 later gained overlays as demand continued to rise. Area code 678 overlaid 770 and 404 in 1998, and area code 470 was added as another overlay in 2010. Area code 943 was added in 2022 as an additional overlay in the same broader Atlanta calling region.

Key Facts About Area Code 770

• Area code 770 is in the state of Georgia and is closely associated with the Atlanta metropolitan area.
• Area code 770 serves many suburban communities around Atlanta rather than the city’s historic core.
• Area code 770 was created on August 1, 1995, in a split from area code 404.
• Area code 770 is in the Eastern Time Zone.
• Area code 770 is a geographic area code, not a toll-free code.
• Area code 770 is part of the Atlanta rate center system that also uses overlay area codes 678, 470, and 943.
• Cities commonly served by area code 770 include Marietta, Roswell, Alpharetta, Lawrenceville, and Smyrna.
• Notable places in the 770 service area include Stone Mountain and major suburban commercial corridors in Cobb and Gwinnett counties.

Frequently Asked Questions

What state is area code 770 in?

Area code 770 is in Georgia.

What major cities use area code 770?

Major cities and communities that use area code 770 include Marietta, Roswell, Alpharetta, Smyrna, Lawrenceville, Duluth, Sandy Springs, Decatur, and Stone Mountain.

Is area code 770 a toll-free number?

No. Area code 770 is a geographic area code for parts of metropolitan Atlanta in Georgia.