678 Area Code
Covers Atlanta and nearby communities in Georgia.
(678) 555-0142Area code 678 map
Interactive coverage map for area code 678, centered on Atlanta, Georgia
33.7490, -84.3880
Open in OpenStreetMapArea code 678 coverage map — centered on Atlanta. Shaded area shows the approximate reach around the primary city.
678 is the area code for Atlanta and the surrounding part of Georgia. It reaches roughly 864,000 people across places such as Atlanta, Sandy Springs, Roswell, Alpharetta and more. The region observes Eastern time, so a number like (678) 555-0142 is on that clock right now. On the ground it spans Dekalb, Fulton, Cobb and nearby counties. It shares its territory with the overlay codes 404, 470, which sit on the exact same map. Because the 678 region uses more than one area code, you must dial all ten digits — area code included — even for a local call. You do not, however, need to dial a leading 1 for calls within the US and Canada. On this page you'll find a live local clock for Atlanta, an interactive coverage map, the cities and counties 678 serves, its overlay and neighboring codes, and tips on spotting 678 spam calls.
Cities covered by 678
Cities & neighborhoods
- Atlanta
- Sandy Springs
- Roswell
- Alpharetta
- Marietta
- Smyrna
- Dunwoody
- Candler-McAfee
- College Park
- Douglasville
- Duluth
- East Point
- Forest Park
- Gainesville
- Griffin
- Kennesaw
- Lawrenceville
- Mableton
- Peachtree City
- Redan
- Tucker
Counties
- Dekalb
- Fulton
- Cobb
- Douglas
- Clayton
- Hall
- Spalding
- Gwinnett
- Fayette
Looking for the broader picture? See all Georgia area codes.
Nearby & overlay area codes
Overlay codes (same area)
These share 678’s geography — a number in either code can be on the same street.
Neighboring codes
Codes for adjacent regions and metros.
Is a call from 678 a scam?
Area code 678 serves Atlanta and the surrounding area, so most calls are ordinary local and business traffic. As everywhere, spam and robocalls do use 678 numbers, frequently by spoofing a local-looking caller ID to boost pickup rates. The area code itself tells you nothing about who is really calling, so judge the call by what's said, not the number.
Red flags to watch for
- Pressure to act right now, or threats of arrest, fines, or service being cut off.
- Requests to pay with gift cards, wire transfer, crypto, or a payment app.
- Asking for passwords, one-time codes, your SSN, or full card/bank numbers.
- A robocall or recording, or a number that won’t let you call back.
When unsure, hang up and call the organization back on a number you look up yourself.
Calling a 678 number from abroad
Every 678 number is a US/Canada +1 number. From a mobile anywhere, the simplest approach is to dial it in international format:
+1 678 555-0142If your phone can’t dial the +, replace it with your country’s exit code, then 1, then the number:
- UK, Germany, France & most of Europe
00 1 678 555-0142 - Australia
0011 1 678 555-0142 - Japan
010 1 678 555-0142 - Mexico
00 1 678 555-0142
Within the US and Canada you don’t need any of this — just dial the ten digits 678 555-0142.
Reverse phone lookup
Check any US or Canada number to see whether it's a working line, which carrier it sits on, whether it's mobile, landline or VoIP, and roughly where it's registered.
Shows carrier, line type and location. Owner name isn't available here.
Results are for personal, informational use only and may not be used for employment, credit, housing or tenant-screening decisions.
Area code 678: frequently asked questions
Where is the 678 area code located?
The 678 area code is located in Georgia, centered on Atlanta. It covers Dekalb, Fulton, Cobb, Douglas, Clayton, Hall, Spalding, Gwinnett, Fayette and nearby communities including Atlanta, Sandy Springs, Roswell, Alpharetta, Marietta, Smyrna.
What time zone is 678 in?
Area code 678 is in the Eastern time zone (UTC-5 (EST) / UTC-4 (EDT)). You can see the exact current local time for Atlanta on the live clock above.
What cities use area code 678?
Cities and areas that use 678 include Atlanta, Sandy Springs, Roswell, Alpharetta, Marietta, Smyrna. Its primary city is Atlanta, GA.
Do I need to dial 1 before 678?
For calls within the US, you do not need to dial a leading 1, but you do need all ten digits: 678 plus the seven-digit number. The 678 area requires ten-digit dialing because more than one area code serves it.
Is 678 a toll-free or scam number?
No — 678 is a normal geographic area code for Atlanta, not a toll-free code (toll-free codes are 800, 833, 844, 855, 866, 877 and 888). A 678 number is not inherently a scam, but the code can be spoofed. See the spam-call section above for how to tell.
What are the overlay area codes for 678?
Area code 678 is overlaid by 404, 470, meaning those codes cover the same geographic area.