Georgia · Eastern Time
Atlanta, GA Area Codes
Atlanta is served by 4 area codes (404, 470, 678, 943). Here's which is original, which are overlays, and how to pick one for a new local number.
Last updated June 5, 2026
Area codes serving Atlanta
Atlanta sits in Georgia, part of the South region and the Eastern Time zone. Its numbers are spread across an overlay of 4 codes that all cover the same ground: 404, 470, 678, 943.
The original code is 404. As the area ran low on numbers, regulators added overlay codes on top instead of splitting the city, so longtime residents kept their numbers while new lines received a newer code.
How to pick an area code for a new number
When you activate a new line in Atlanta, the carrier assigns whichever code has numbers available — you usually can't choose. If a specific code matters to you (for example the prestige of 404), ask the carrier whether any blocks remain, or request a number transfer. All codes here dial identically and cost the same.
Dialing in Atlanta
Because Atlanta is an overlay area, 10-digit dialing is mandatory: always dial the area code plus the seven-digit number, even for a neighbor. See 10-digit dialing and overlay area codes for the background. For every code in Georgia, visit the Georgia area codes page.
Quick answers
Atlanta area code FAQ
What area codes does Atlanta use?
Atlanta, GA is served by 4 area codes: 404, 470, 678, 943.
Which is the original Atlanta area code?
404 is the original/primary code for Atlanta; the others are overlays added later for more numbers.
Do I need to dial the area code in Atlanta?
Yes. With multiple overlapping codes, 10-digit dialing is required for every call in this area.