Caller ID for
Area code 678
Area code 678 Atlanta, Georgia
Area code 678 is in Georgia, with numbers assigned in Atlanta, Gainesville, Newnan and 33 more places. It’s 12:13 AM there now.
- State
- Georgia10 area codes in Georgia
- Time zone
- Eastern12:13 AM there now
- Exchanges
- 78536 places
- Overlay
- 404, 470, 770 and 943Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 678 is
Numbers in 678 are assigned to 36 places in 23 counties: DeKalb County, Fulton County, Hall County, Coweta County, Bartow County, Carroll County, plus 17 more.
Atlanta holds most of them: 73% of the exchanges.
- Atlanta572
- Gainesville36
- Newnan18
- Cumming15
- Buford15
- Conyers14
- Winder13
- Adairsville11
- Covington9
- Griffin9
- Carrollton8
- Cartersville6
- Cedartown5
- Villa Rica5
- Clermont4
- Social Circle4
- Flowery Branch4
- Lula3
- Concord3
- Rockmart3
- Senoia2
- Monroe2
- Nelson2
- Canton2
Phone companies in 678
785 blocks of numbers in 678 are held by 23 phone companies. The most belong to Paetec Itel (159), AT&T (122) and Lumen (Level 3) (120).
A large share, about 56%, belongs to competitive and internet phone carriers; wireless networks hold 26% and local phone and cable companies 18%.
A block’s holder is the company it was first assigned to; numbers can move to other carriers since.
History and overlays
678 went into service in 1998, added to the area of 470.
404 (since 1947), 470 (since 2010), 770 (since 1995) and 943 (since 2022) share the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
5 new exchanges were assigned since 2021, the latest in December 2023.
Calling 678
It’s 12:13 AM Eastern time in 678 right now.
From elsewhere in the U.S., dial 1, 678 and the 7-digit number; inside the area, all 10 digits too.
Nearby area codes
Georgia has 10 area codes: 229, 404, 470, 478, 678, 706, 762, 770, 912 and 943.
- 706 · Augusta-Richmond County, GA · about 28 mi
- 762 · Columbus, GA · about 28 mi
- 478 · Macon-Bibb County, GA · about 94 mi
- 256 · Huntsville, AL · about 127 mi
- 864 · Greenville, SC · about 135 mi
- 821 · Greenwood, SC · about 135 mi
From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.
Map of the 678 area code
Map of the 678 area code around Atlanta, Gainesville and Newnan, Georgia.
Cities on the map
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Questions about 678
Where is area code 678?
In Georgia, covering Atlanta, Gainesville and Newnan and other places across 23 counties.
What time zone is 678 in?
Eastern time. It was 12:13 AM there when this page loaded.
Is 678 an overlay?
Yes. 404, 470, 770 and 943 serve the same area, so dial all 10 digits for local calls.
Which phone companies have 678 numbers?
23 companies hold blocks; the most belong to Paetec Itel, AT&T and Lumen (Level 3). About 26% of blocks are wireless.
Is 678 running out of numbers?
Not on record. 5 new exchanges have been assigned since 2021.