If you’re trying to call someone in Atlanta, Georgia, set up a local business line, or figure out why you keep seeing different numbers like 404, 470, or 678, you’re really asking:
“What is the area code for Atlanta, Georgia?”
The short answer:
Atlanta doesn’t have just one area code anymore. It uses multiple overlay area codes that all cover much of the same metropolitan area.
Here are the main area codes you’ll see in and around Atlanta:
| Area Code | Primary Use in Atlanta Area |
|---|---|
| 404 | Original Atlanta area code; covers much of the City of Atlanta |
| 770 | Surrounding suburbs and metro Atlanta outside the core 404 zone |
| 678 | Overlay for both 404 and 770; used widely across metro Atlanta |
| 470 | Newer overlay; used across the greater Atlanta metro area |
If you live in or are calling Atlanta, the number you’re dialing will almost always begin with 404, 470, 678, or 770.
Atlanta has grown quickly, and so has demand for phone numbers. As more people, businesses, and devices (like cell phones and fax lines) needed numbers, the original 404 area code alone wasn’t enough.
Instead of carving the city up into many small regions, regulators introduced overlay area codes. That means:
For Atlanta residents and visitors, this mainly affects how you dial and what you see on caller ID—but not how the city itself is divided.
When people think “Atlanta area code,” they often think 404 first.
404 is historically tied to:
These boundaries are not perfectly rigid—because of overlays, a building next door to a 404 number might have 678 or 470—but 404 is still strongly associated with “intown” Atlanta.
As the Atlanta metro area expanded and outgrew 404, 770 was introduced.
You’ll typically see 770 in suburbs and communities outside central Atlanta, including parts of:
Again, because of overlays, some of these places also use 678 or 470.
To keep up with demand—especially with the boom in cell phones and business lines—Georgia introduced overlay codes:
An overlay means a new area code is layered on top of an existing region. Instead of splitting the map, phone providers simply:
So, within the Atlanta metro area, two people living on the same street might have 404, 678, or 470 numbers.
You can find 678 and 470 tied to addresses all across the greater Atlanta region, including:
If you’re getting a new mobile number in Atlanta today, there’s a good chance it will be 678 or 470, regardless of whether you’re inside or outside the Perimeter.
Yes. With multiple overlay area codes in the same area, 10-digit dialing is standard in Atlanta.
When you place a call within the Atlanta metro area:
For long-distance or certain carriers, you may also need to:
If you’re not sure, check with your phone carrier, but inside Atlanta it’s safest to always include the area code.
If you’re outside the country and want to call Atlanta:
Example from abroad:
If you’re trying to figure out which area code applies to you in or around Atlanta, consider:
You don’t get to “pick” the region-based code in most cases; your carrier assigns one that’s available.
For new lines in the Atlanta area, especially mobile phones:
Here are some practical pointers for handling area codes in Atlanta:
Always save contacts with the area code
This avoids misdials and works better if you travel or switch carriers.
Don’t assume area code = scam
While spam calls can come from any area code, 404, 470, 678, and 770 are all common in Atlanta. Treat unknown calls cautiously, but the area code alone doesn’t prove anything.
Check your phone plan for local vs. long-distance
Within the metro area, calls between different Atlanta area codes (404, 470, 678, 770) are usually treated as local under most plans, but it’s wise to confirm with your provider.
Business numbers may be spread across codes
A company with offices in Downtown Atlanta and in Cobb County might use 404, 678, or 770 numbers interchangeably.
If you’re unsure whether a number is part of Atlanta or the surrounding metro, you can:
Some key local entities that frequently use 404 or 678 area codes include:
Their phone numbers are often listed on official printed materials, directories, or posted at their locations.
To directly answer “What is the area code for Atlanta, Georgia?”:
If you live in or are visiting Atlanta, assume that:
