Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — AREA-CODE/678

678 area code

Area code 678 is in Georgia. It covers Atlanta, South Fulton, Sandy Springs and 167 other places: 307 ZIP codes in Fulton, Gwinnett, DeKalb and 26 other counties. Local time there is , Eastern Time. In service since 1998 as an overlay: it covers the same area as 404, 470, 770 and 943, so a number from there can have any of them.

State
Georgia
Time zone
Eastern
Largest city
Atlanta
Overlays
404, 470, 770, 943
In service since
1998
Rate centres
42
Prefixes assigned
785 (7,850,000 numbers)

Who calls from a 678 number

NANPA records the carrier each block of 678 numbers is assigned to. Of the 7.8 million 678 numbers assigned, 46% are with cable, internet-calling, business and other carriers (PAETEC (Windstream) and Level 3); 39% with mobile carriers (T-Mobile, AT&T Mobility and Verizon Wireless); 16% with local phone companies (AT&T).

That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.

Carriers holding the most 678 numbers
CarrierKindShare
T-MobileMobile20%
AT&TLandline15%
PAETEC (Windstream)Cable, VoIP, other10%
AT&T MobilityMobile9%
Verizon WirelessMobile9%
Level 3Cable, VoIP, other8%

An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.

Places in area code 678

The 37 places with a telephone rate centre of their own using 678, largest first. Each links to its ZIP codes.

Places in area code 678
PlaceZIP codesPopulation
Atlanta, GA 92 505,268
Gainesville, GA 5 45,032
Newnan, GA 4 44,235
Canton, GA 3 35,741
Carrollton, GA 5 27,392
Cartersville, GA 2 24,074
Griffin, GA 2 23,761
Winder, GA 1 19,437
Villa Rica, GA 1 18,551
Conyers, GA 3 18,512
Buford, GA 3 17,997
Monroe, GA 2 15,648
Covington, GA 3 14,584
Flowery Branch, GA 1 10,925
Cedartown, GA 1 10,227
Cumming, GA 3 8,469
Bremen, GA 1 7,488
Barnesville, GA 1 6,121
Temple, GA 1 5,901
Jackson, GA 1 5,741
Senoia, GA 1 5,589
Social Circle, GA 1 5,217
Rockmart, GA 1 5,204
Adairsville, GA 1 4,999
Grantville, GA 1 3,251
Tallapoosa, GA 1 3,227
Lula, GA 1 2,964
Bowdon, GA 1 2,006
Zebulon, GA 1 1,698
Buchanan, GA 1 1,306
Clermont, GA 1 1,243
Nelson, GA 1 1,166
Luthersville, GA 1 1,000
Kingston, GA 1 993
Marble Hill, GA 1 973
Roopville, GA 1 467
Concord, GA 1 438

Nearby places using 678

These places have no rate centre of their own in NANPA's records; the nearest one uses 678. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 678

307 ZIP codes in 124 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 678 numbers are issued

NANPA's rate centres with the most 678 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 678
Rate centrePlacePrefixes
ATLANTA NE Atlanta 285
ATLANTA NW Atlanta 130
ATLANTA Atlanta 95
ATLANTA SO Atlanta 62
GAINESVL Gainesville 36
NEWNAN Newnan 18

Counties

The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.

Which code covers where you are now? What area code am I in? answers from your location.

Questions about area code 678

Where is area code 678?

Area code 678 is in Georgia. It covers Atlanta, South Fulton, Sandy Springs and 167 other places: 307 ZIP codes in Fulton, Gwinnett, DeKalb and 26 other counties.

What ZIP codes are in area code 678?

307 ZIP codes, by the town each is mailed to: Atlanta (92, 30301 to 39901), Roswell (3, 30075 to 30077), Mableton (30126), Alpharetta (5, 30004 to 30023) and 120 more towns. The full list is on this page.

What time zone is area code 678 in?

Eastern time.

Is a 678 number a mobile or a landline?

It can be either. 39% of 678 numbers are assigned to mobile carriers and 16% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.

What area codes overlay 678?

404, 470, 770 and 943. They cover the same area as 678, so a new number there can be given any of them.

Does a 678 number mean the caller is in Georgia?

Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 678 call can come from anywhere.

Other area codes in Georgia

All 10 Georgia area codes, by area, with the cities each covers

Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.

Cite this page

zipcodes.pro. “Area code 678.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/678

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