The U.S. state of Georgia is divided into six geographically distinct numbering plan areas in the North American Numbering Plan (NANP), which are served by ten area codes.
| Area code | Year created | Parent NPA | Overlay | Numbering plan area |
|---|---|---|---|---|
| 404 | 1947 | – | 404/470/678/943 | Atlanta and immediate environs (central Fulton and DeKalb counties) |
| 770 | 1995 | 404 | 470/678/770/943 | Central north Georgia surrounding the Atlanta metro area |
| 678 | 1998 | 404, 770 | 404/470/678/943 470/678/770/943 | Central north Georgia including the Atlanta metro area |
| 470 | 2010 | 404/678/770 | ||
| 943 | 2022 | 404/470/678/770 | ||
| 706 | 1992 | 404 | 706/762 | Columbus (west-central Georgia); Rome, Dahlonega, Toccoa, Athens and Augusta (northwest, northeast, upper east-central Georgia) |
| 762 | 2006 | 706 | ||
| 912 | 1954 | 404 | – | Savannah, Reidsville, Vidalia, Waycross, Brunswick, Douglas, and coastal Georgia |
| 229 | 2000 | 912 | – | Southwest Georgia (Albany, Thomasville, Valdosta, Tifton, Cairo, Fitzgerald, Americus) |
| 478 | 2000 | 912 | – | central Georgia, comprising Macon, Forsyth, Fort Valley, Warner Robins, Dublin, Eastman, Milledgeville |
In 1947, Georgia was a single numbering plan area (NPA) with area code 404. In 1954, 912 was assigned to its southern and central areas.
The state operated with two area codes until May 3, 1992, when area code 706 was created for the two separate areas outside of the metro Atlanta area. Due to complaints from exurban residents who were to be put in 706, they were moved back into 404, which makes every new area code added to the metro area run out of numbers sooner. At this time, these areas were also fully included in what was already the world's largest toll-free local calling zone (previously many were only able to call the adjacent telephone exchanges on the edge of metro Atlanta). Area code 770 was therefore assigned to Atlanta's suburbs just three years later in August 1995, requiring ten-digit dialing between them, and with all mobile phones keeping 404. 678 was given to both the city and its suburbs in January 1998, becoming the first overlay area code in the state, and forcing mandatory ten-digit dialing for all calls.
Flip-flopping on its position on assigning new area codes, the Georgia Public Service Commission dictated that a double split of 912 would occur after that, with 229 and 478 being applied to southwest Georgia and central Georgia in August 2000. With the GPSC reversing course a third time, 470 became the second area code to overlay Atlanta in September 2001, but remained unused until 2010. [1] In September 2005, 762 was overlaid to all of the existing area code 706, despite the fact that it has been physically split into two separate and disconnected sections since it was created in 1992. [2]
The newest area code, 943, went into service in March 2022 as another area code for the Atlanta area. [3] Usage projections in 2024, suggested that 229 and 912 will require relief before 2030. [4] In May 2025, area code 565 was announced for a future overlay in NPA 912.