678 Area CodeAtlanta, GA
Area code 678 covers Atlanta and nearby communities in Georgia, in the Eastern Time (ET) zone, home to about 2.8 million people across 165 cities. It overlays 404, 470, 770 and 943, so the region uses several codes and every local call needs all ten digits.
Overview
- Major City
- Atlanta
- State
- Georgia (GA)
- Timezone
- Eastern Time (ET)
- Current Time
- Overlay
- Yes – shares area with 404, 470, 770, 943
Overview of the 678 Area Code
What is the 678 area code?
The 678 area code serves Atlanta, Georgia, alongside other established area codes. When you see a 678 number, it indicates a local number within this geographic area.
Why was area code 678 created?
The 678 area code was introduced as an overlay to add numbers in Atlanta once the existing area codes 404, 470, 770, and 943 began to run out of available prefixes. It added a new supply of numbers without requiring current residents to change their existing digits.
Geographic Coverage of the 678 Area Code
The 678 area code serves Atlanta and surrounding areas in Georgia. It operates within the Eastern Time (ET) time zone. It complements the coverage of area codes 404, 470, 770, and 943. This area code covers several key cities, including:
- Atlanta
- Sandy Springs
- Roswell
- Johns Creek
- Mableton
- Alpharetta
Got a call from a 678 number? It came from Atlanta, GA. Since 678 overlays with 404, 470, 770, and 943, every local call in the region needs all ten digits to land on the right line. Inside 678, Atlanta holds about 19% of the population; the rest is split across 164 smaller cities.
Atlanta Area Codes Overview
Atlanta is served by multiple area codes, reflecting its telecommunications needs. The 678 area code operates alongside 404, 470, 770, 943. Here are the area codes serving this region:
The introduction of the 678 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 678 cover?
| City | State | Population | % of Area Code | % of City |
|---|---|---|---|---|
| Atlanta | GA | 520,070 | 2% | 100% |
| Sandy Springs | GA | 105,505 | 0% | 100% |
| Roswell | GA | 92,227 | 1% | 100% |
| Johns Creek | GA | 81,167 | 0% | 100% |
| Mableton | GA | 78,314 | 0% | 100% |
| Alpharetta | GA | 67,275 | 0% | 100% |
| Marietta | GA | 63,122 | 0% | 100% |
| Smyrna | GA | 57,177 | 0% | 100% |
| Dunwoody | GA | 51,795 | 0% | 100% |
| Gainesville | GA | 47,712 | 0% | 100% |
* Sources: Population – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 678 been reported for unwanted calls?
Yes – 594 unwanted-call complaints were reported to the FTC for numbers showing a 678 area code (May 29 – Jul 2, 2026).
- 54% robocalls
- ↑ 8% vs prior period
Most-reported subjects
- Other51%301
- Medical & prescriptions10%62
- Calls pretending to be government, businesses, or family and friends10%61
* Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-07-05.
Which prefixes and exchanges belong to area code 678?
78% assigned to a telco
- 81% Landline
- 19% Wireless
- 0% Unknown
| Prefix | Usage | Carrier |
|---|---|---|
| (678)200- | Landline | Powertel Atlanta Licenses |
| (678)201- | Wireless | Sprint Spectrum |
| (678)202- | Landline | Mcimetro Access Transmission Services |
| (678)203- | Landline | Peerless Network Of Georgia |
| (678)204- | Landline | Southern Bell Tel & Tel |
| (678)205- | Landline | Us Lec Of Georgia |
| (678)206- | Landline | Us Lec Of Georgia |
| (678)207- | Landline | Us Lec Of Georgia |
| (678)208- | Landline | Us Lec Of Georgia |
| (678)209- | Landline | Us Lec Of Georgia |
Frequently Asked Questions about the 678 Area Code
Who called me from a 678 number?
A 678 number is assigned to Atlanta, Georgia, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 678 code to look nearby, so a 678 number doesn't prove the caller is local. Recently, 594 unwanted-call complaints were reported to the FTC for numbers showing the 678 code (54% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 678 a scam area code?
No area code is a scam on its own. 678 is a normal, officially assigned code for Atlanta, Georgia. Spam callers spoof local codes to raise the odds you answer, so 678 on your caller ID says nothing about who is really calling. Recently, 594 unwanted-call complaints were reported to the FTC for numbers showing the 678 code (54% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 678 area code?
Repeated calls from different 678 numbers are usually spoofing: a robocaller rotates through 678 numbers so each call looks local and slips past simple blocks. Recently, 594 unwanted-call complaints were reported to the FTC for numbers showing the 678 code (54% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 678 number?
If you aren't expecting a 678 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 678 area code?
Block a single 678 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 678 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 678?
Area code 678 covers Atlanta and the surrounding area in Georgia, spanning 165 cities with about 2,792,606 residents. It shares its area with overlay codes 404, 470, 770, 943.
Is 678 a real area code?
Yes. 678 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Atlanta, Georgia. A real code can still show up on spoofed spam calls, so treat unknown 678 calls with normal caution.
What timezone is the 678 area code in?
The 678 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 678 caller may not be in that zone.
How do I call a 678 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 678 and the seven-digit number. From a mobile phone you can usually just enter +1 678 followed by the number and let the phone add the exit code for you.