Area code 770: where it is and who calls from it
Area code 770 is in Georgia.
Georgia (Marietta, Carrollton, Gainesville, Jonesboro, Lawrenceville, Roswell, Stone Mountain, Snellville, Cartersville, and much of north-central Georgia d metropolitan Atlanta outside of Interstate 285)
| Where | Georgia |
|---|---|
| Time zone | Eastern Time ยท local time |
| In service since | 1995 |
| Overlay | Yes, with 470, 678, 943 |
| Prefixes assigned | 784 of 792 possible (99%) |
Overlay: 770 covers the same area as 470, 678, 943. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Where 770 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 770, with how many prefixes each has.
Who holds 770 numbers
- Mobile carrier 16%
- Local phone company 57%
- Internet / business phone carrier 22%
- Paging service 2%
- Phone company 2%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| AT&T (local phone) | Local phone company | 431 | 55% |
| AT&T Mobility | Mobile carrier | 53 | 7% |
| Verizon Wireless | Mobile carrier | 45 | 6% |
| MCImetro (Verizon Business) | Internet / business phone carrier | 36 | 5% |
| Teleport Communications America | Internet / business phone carrier | 36 | 5% |
| Comcast | Internet / business phone carrier | 35 | 4% |
| Windstream (PAETEC) | Internet / business phone carrier | 28 | 4% |
| Onvoy | Internet / business phone carrier | 27 | 3% |
| Spok | Paging service | 16 | 2% |
| T-Mobile (including Sprint) | Mobile carrier | 15 | 2% |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number.
States served: Georgia.
Other area codes in Georgia
229 404 470 478 678 706 762 912 943
Got a call from 770?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 770 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.