The 678 area code covers the same area as 470, including Atlanta, Winder and 35 more places in Georgia.
Area code 678 is in Georgia, on Eastern Time. In the 678 area, phone numbers are given out most in Fulton County, then Hall and Barrow counties. It has been in service since January 6, 1998. 404, 470, 770 and 943 cover the same area, so two neighbours can have different area codes.
- Where
- 8 counties in Georgia, mostly Fulton County, Hall County and Barrow County
- Time zone
- Eastern Time
- In service since
- January 6, 1998
- Shares its area with
- 404 (since 1947), 470 (since 2010), 770 (since 1995) and 943 (since 2022)
- Prefixes in use
- 783
- How to dial
- Local calls need all 10 digits: 678-555-0142.
Find out who called you from a 678 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (678) number is on today, use our free carrier lookup.
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Atlanta holds 73% of the phone prefixes in area code 678.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 783 prefixes in use shows where 678 numbers are actually given out.
- Atlanta572 prefixes, 73%
- Gainesville36 prefixes, 5%
- Newnan18 prefixes, 2%
- Cumming15 prefixes, 2%
- Buford15 prefixes, 2%
- Conyers14 prefixes, 2%
- Winder13 prefixes, 2%
- Adairsville11 prefixes, 1%
Also served: Newnan, Covington, Cartersville and Social Circle and 25 smaller places.
PAETEC (Windstream) holds the most phone number prefixes in area code 678: 159 of 783.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 783 prefixes in use in 678 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| PAETEC (Windstream)Windstream's business phone network | 159 | 20% |
| BellSouth (AT&T)AT&T's landline company | 120 | 15% |
| Level 3 (Lumen)Lumen's business and wholesale network | 120 | 15% |
| T-MobileMobile network | 63 | 8% |
| Metro by T-MobileT-Mobile's prepaid brand | 56 | 7% |
| AT&T MobilityMobile network | 48 | 6% |
| 18 other carriers | 217 | 28% |
79% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
678 has been overlaid once since 1998.
1998
678 starts on January 6, 1998, as an overlay on 470: new numbers on the same ground.
2010
On February 26, 2010, 470 is added on top of 678, so new numbers here can get either code.
A 678 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 678 are 706, 478 and 256.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
Georgia has 9 other area codes.
These are the questions people ask most about area code 678.
Where is area code 678?
678 covers Atlanta, Winder, Gainesville and Cumming and 33 more places in Georgia. In the 678 area, phone numbers are given out most in Fulton County, then Hall and Barrow counties.
What state is area code 678 in?
Georgia. 678 is a Georgia area code on Eastern Time.
What cities use area code 678?
The places holding the most 678 prefixes are Atlanta, Winder, Gainesville, Cumming, Buford, Conyers, Adairsville and Griffin, out of 37 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 678?
No single phone company owns 678. NANPA's records show PAETEC (Windstream) holds the most 678 prefixes, 159 of 783, followed by BellSouth (AT&T) and Level 3 (Lumen). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 678 in?
678 is on Eastern Time.
When did area code 678 start?
678 went into service on January 6, 1998, as an overlay on 470: new numbers for the same area.
Is 678 the same area as 404, 470, 770 and 943?
Yes. 404 (since 1947), 470 (since 2010), 770 (since 1995) and 943 (since 2022) cover the same ground as 678. Nobody's number changed when they were added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 678 number?
Local calls need all 10 digits: 678-555-0142.
Is 678 a toll-free number?
No. 678 is a regular area code for Atlanta and Winder in Georgia, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 678?
The closest are 706/762 (Augusta, Georgia), 478 (Macon, Georgia), 256/938 (Huntsville, Alabama) and 864/821 (Greenville, South Carolina), measured between the centres of each area.
Who called me from a 678 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 678 a scam?
678 is a real Georgia area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.