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Area Code 678 Location & Details

State / Region: Georgia • Country: United States

Major Cities Covered: Atlanta, Sandy Springs, Roswell, Johns Creek, Mableton, Alpharetta, Marietta, Stonecrest, Brookhaven, Smyrna

Standard Dial Format
+1 (678) XXX-XXXX
Country Code: +1 (NANP Format)
What State is Area Code 678?
GeorgiaState Hub →
Country Territory
United States
678 Area Code Time Zone
Eastern
678 Overlay Codes
404, 470, 770, 943

Area Code 678 Geographic Map

Interactive location bounds and coverage area for Georgia (Eastern Timezone)

Lat: 33.87° • Lng: -84.31°
📍 Geographic Center: GeorgiaMap data © OpenStreetMap contributors

Where is Area Code 678 Located?

Telephone area code 678 is assigned to Georgia in United States. It serves cities and metropolitan communities including Atlanta, Sandy Springs, Roswell, Johns Creek, Mableton, Alpharetta, Marietta, Stonecrest, Brookhaven, Smyrna.

Historical Context & Area Code Overlay Information:678 serves Georgia (United States).

For local and long-distance calls within area code 678, standard 10-digit dialing (678) XXX-XXXX applies.

Who Called Me from Area Code 678?

Received an unknown call, missed call, or text scam from area code 678? Here is how to trace who is calling from 678 area code and verify unknown numbers safely:

1.
Identify Missed Calls & Voicemails:

Legitimate contacts usually leave a detailed voicemail or caller ID record.

2.
Watch Out for Neighbor Spoofing:

Robocallers often fake incoming caller ID numbers using your local 678 prefix to boost pick-up rates.

3.
Reverse Phone Lookup Area Code 678:

Search public white-pages or use caller intelligence guides before returning unfamiliar calls.

Learn How Reverse Phone Lookups Work→

How to Call Area Code 678 & Dialing Format

When placing a phone call to a number in area code 678, follow the correct dialing format depending on your calling location:

  • Calling from inside the US / Canada (+1): Dial 1 + (678) + 7-digit number.
  • Calling from an international location outside +1: Dial your country's international exit code (e.g. 011 in US or + on mobile) + 1 + 678 + 7-digit number.
  • Do I need to dial area code 678 for local calls? Yes, 10-digit dialing (area code + line number) is mandatory across North American telephone networks.

Top Cities & Municipalities Served in Area Code 678

Urban centers, census places, and communities within the +1-678 calling area

50 Major Cities Listed
City NameCountyPopulation% of 678 Pop
AtlantaFulton County529,11023.0%
Sandy SpringsFulton County105,0134.6%
RoswellCherokee County91,5054.0%
Johns CreekGwinnett County80,4013.5%
MabletonFulton County78,8203.4%
AlpharettaForsyth County66,9212.9%
MariettaCobb County63,5742.8%
StonecrestDeKalb County61,3372.7%
BrookhavenDeKalb County59,6432.6%
SmyrnaFulton County57,5132.5%
DunwoodyDeKalb County51,7922.3%
GainesvilleHall County49,2212.1%
NewnanCoweta County45,8672.0%
Peachtree CornersDeKalb County42,5191.9%
MiltonCherokee County41,2661.8%
Peachtree CityFayette County40,8801.8%
CantonCherokee County40,7781.8%
WoodstockCherokee County39,8951.7%
East PointFulton County38,2251.7%
KennesawCobb County37,9701.7%

Counties Covered by Area Code 678

Geographic county distribution and population coverage across Georgia

County NameTotal Population% of 678 Area% of County
Fulton County1,090,46835.2%74%
DeKalb County772,58415.7%47%
Gwinnett County1,009,86411.2%25%
Cherokee County294,03010.2%79%
Cobb County788,8796.3%18%
Forsyth County278,7972.9%24%
Hall County223,5452.7%28%
Fayette County124,7512.7%49%
Henry County259,9722.1%18%
Coweta County158,1782.0%29%
Walton County110,2781.5%31%
Carroll County129,4931.2%22%
Bartow County117,9241.1%21%
Spalding County70,3111.0%34%
Barrow County96,9690.9%22%
Douglas County152,0600.9%14%
Rockdale County97,4020.9%21%
Newton County123,6780.8%14%
Paulding County187,9330.7%8%

☎️Area Code 678 Exchange Prefixes & Carriers

Showing 50 of 800 central office 3-digit prefixes and assigned telecom carriers

78% Landline19% Wireless3% VoIP
PrefixLine UsageRate CenterAssigned CarrierAssign Date
(678) 200-📞LandlineGAINESVLPOWERTEL ATLANTA LICENSES, INC.06/11/2004
(678) 201-📱WirelessATLANTA SOMETROPCS, INC.N/A
(678) 202-📞LandlineATLANTA NWMCIMETRO ACCESS TRANSMISSION SERVICES LLCN/A
(678) 203-💻VoIPCLERMONTPEERLESS NETWORK OF GEORGIA, LLC - GA04/08/2013
(678) 204-📞LandlineXXXXXXXXXXBELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TELN/A
(678) 205-📞LandlineATLANTA NEPAETEC ITEL, LLCN/A
(678) 206-📞LandlineATLANTA NEPAETEC ITEL, LLCN/A
(678) 207-📞LandlineGAINESVLPAETEC ITEL, LLCN/A
(678) 208-📞LandlineCUMMINGPAETEC ITEL, LLCN/A
(678) 209-📞LandlineATLANTA NEPAETEC ITEL, LLCN/A
(678) 210-📞LandlineCONYERSPAETEC ITEL, LLCN/A
(678) 211-📞LandlineXXXXXXXXXXMULTIPLE OCN LISTINGN/A
(678) 212-📞LandlineCOVINGTONPAETEC ITEL, LLCN/A
(678) 213-📞LandlineATLANTA NWPAETEC ITEL, LLCN/A
(678) 214-📞LandlineATLANTA NWPAETEC ITEL, LLCN/A
(678) 215-📞LandlineATLANTA NEPAETEC ITEL, LLCN/A
(678) 216-📞LandlineATLANTA SOPAETEC ITEL, LLCN/A
(678) 217-📞LandlineATLANTA NWPAETEC ITEL, LLCN/A
(678) 218-📞LandlineATLANTA NEPAETEC ITEL, LLCN/A
(678) 219-📞LandlineWINDERWINDSTREAM GEORGIA COMMUNICATIONS CORP.N/A
(678) 220-📞LandlineATLANTA NEMERRYVILLE INVESTMENTS, LTD DBA BEST PAGEN/A
(678) 221-📞LandlineATLANTA NELEVEL 3 TELECOM OF GEORGIA, LP - GAN/A
(678) 222-📞LandlineATLANTA NELEVEL 3 TELECOM OF GEORGIA, LP - GAN/A
(678) 223-📞LandlineATLANTA NWLEVEL 3 TELECOM OF GEORGIA, LP - GAN/A
(678) 224-📞LandlineATLANTA NWMCIMETRO ACCESS TRANSMISSION SERVICES LLC - GAN/A
(678) 225-📞LandlineATLANTA NEMCIMETRO ACCESS TRANSMISSION SERVICES LLCN/A
(678) 226-📞LandlineATLANTA NEMCIMETRO ACCESS TRANSMISSION SERVICES LLCN/A
(678) 227-📞LandlineWINDERWINDSTREAM GEORGIA COMMUNICATIONS CORP.N/A
(678) 228-📞LandlineATLANTA SOLEVEL 3 COMMUNICATIONS, LLC - GAN/A
(678) 229-📞LandlineATLANTA NWLEVEL 3 COMMUNICATIONS, LLC - GAN/A
(678) 230-📱WirelessATLANTA NENEW CINGULAR WIRELESS PCS, LLC - GAN/A
(678) 231-📱WirelessATLANTA NENEW CINGULAR WIRELESS PCS, LLC - GAN/A
(678) 232-📱WirelessATLANTA NENEW CINGULAR WIRELESS PCS, LLC - GAN/A
(678) 233-📞LandlineATLANTA SOLEVEL 3 COMMUNICATIONS, LLC - GAN/A
(678) 234-📱WirelessATLANTA NENEW CINGULAR WIRELESS PCS, LLC - GAN/A
(678) 235-📞LandlineATLANTAPAETEC ITEL, LLCN/A
(678) 236-📞LandlineATLANTA NWPAETEC ITEL, LLCN/A
(678) 237-📞LandlineATLANTAPAETEC ITEL, LLCN/A
(678) 238-📞LandlineATLANTA NWPAETEC ITEL, LLCN/A
(678) 239-📞LandlineATLANTA NWPAETEC ITEL, LLCN/A
(678) 240-📞LandlineATLANTA NEPAETEC ITEL, LLCN/A
(678) 241-📞LandlineATLANTA NWPAETEC ITEL, LLCN/A
(678) 242-📞LandlineATLANTA NEPAETEC ITEL, LLCN/A
(678) 243-📞LandlineATLANTA NEPAETEC ITEL, LLCN/A
(678) 244-📞LandlineATLANTAPAETEC ITEL, LLCN/A
(678) 245-📞LandlineATLANTA NEBELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TELN/A
(678) 246-📞LandlineCEDARTOWNPOWERTEL ATLANTA LICENSES, INC.03/27/2001
(678) 247-📞LandlineATLANTA NWBELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TELN/A
(678) 248-📞LandlineATLANTA NELEVEL 3 COMMUNICATIONS, LLC - GAN/A
(678) 249-📞LandlineATLANTA NEMCIMETRO ACCESS TRANSMISSION SERVICES LLCN/A

Frequently Asked Questions about Area Code 678

Where is area code 678 located?

Area code 678 is located in Georgia (United States), serving cities like Atlanta, Sandy Springs, Roswell, Johns Creek, Mableton, Alpharetta, Marietta, Stonecrest, Brookhaven, Smyrna.

What timezone is area code 678?

Area code 678 operates in the Eastern timezone.

What state is area code 678?

Area code 678 is assigned to the state / telecom territory of Georgia.

Is area code 678 a scam or dangerous?

Area code 678 is an official geographic area code for Georgia. However, beware of robocaller spoofing.

Georgia State Area Codes

View complete directory of telephone area codes assigned to Georgia.

Explore Georgia Directory

Get a 678 Business Phone Number

How to acquire a virtual phone number or business line with area code 678 for local customer trust in Georgia.

Get 678 Business Number
🛡️ Scam & Safety Directory

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Overlay & Nearby Area Codes for Georgia

Explore neighboring telecom prefixes sharing geographical boundaries with area code 678.

404
Eastern
Area Code 404
Atlanta, Sandy Springs, Mableton, Marietta, Brookhaven, Smyrna, Dunwoody, East Point, Tucker, Chamblee
470
Eastern
Area Code 470
Atlanta, Sandy Springs, Roswell, Johns Creek, Mableton, Alpharetta, Marietta, Stonecrest, Brookhaven, Smyrna
770
Eastern
Area Code 770
Atlanta, Sandy Springs, Roswell, Johns Creek, Mableton, Alpharetta, Marietta, Stonecrest, Brookhaven, Smyrna
943
Eastern
Area Code 943
Atlanta, Sandy Springs, Roswell, Johns Creek, Mableton, Alpharetta, Marietta, Stonecrest, Brookhaven, Smyrna