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US area code · Georgia

770 area code

Where the 770 area code is, its overlay and how to dial a +1 770 number from anywhere.

CoversAlpharetta, GeorgiaTime zoneEastern (ET)TypeOverlay
Quick answer

The 770 area code is in Alpharetta, Georgia, United States (Eastern (ET)). To call from abroad: +1 770 555-0123. It is an overlay, so all 10 digits are dialled.

StateGeorgia
Main areaAlpharetta
Time zoneEastern (ET)
TypeOverlay
10-digit dialingRequired
In service since22-Jun-1995

The 770 area code is a geographic North American Numbering Plan (NANP) code covering Alpharetta, Georgia. It has been in service since 22-Jun-1995 and sits in the Eastern (ET) time zone.

Overlay 770 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

770404470678943

How to dial a 770 number

From abroad+1 770 555-0123
Within the US / Canada1 770 555-0123
Locally (same area)770 555-0123

Cities in the 770 area code

A 770 number is usually in one of these places in Georgia — 11 counties.

Alpharetta FultonAtlanta Dekalb;FultonCollege ParkDouglasville DouglasDuluth Fulton;GwinnettDunwoodyForest Park ClaytonGainesville HallGriffin SpaldingKennesaw CobbLawrenceville GwinnettMableton CobbMarietta CobbPeachtree City FayetteRedan DekalbRoswell FultonSandy SpringsSmyrna CobbTucker Dekalb

Other Georgia area codes

229404470478678706762912943

Frequently asked questions

Where is the 770 area code?

The 770 area code is in Alpharetta, Georgia, United States (Eastern (ET)).

Is 770 an overlay area code?

Yes. 770 overlays the same region as 404, 470, 678, 943, so callers dial all 10 digits.

Do I have to dial 10 digits for 770?

Yes — dial the area code plus the seven-digit number.

How do I call a 770 number from another country?

Dial your exit code (or +), then 1, then 770, then the number: +1 770 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 770 number does not pinpoint a street or ZIP code.

Number holders in area code 770

Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 798 prefixes are in use in 770, shared by 31 companies. The largest holders:

CompanyPrefixesShare
Bellsouth Telecomm Inc Dba Southern Bell Tel & Tel42954%
New Cingular Wireless PCS, LLC537%
Cellco Partnership Dba Verizon Wireless456%
Teleport Communications America, LLC365%
Comcast Ip Phone, LLC354%
Paetec Itel, LLC284%

Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.

Complaints about 770 numbers

Reports to the FTC, last 30 days
640
Recorded messages or robocalls
60%
Rank among area codes
#126 of 670
Most reported subjects
Other (322)
Calls pretending to be government, businesses, or family and friends (106)
Medical & prescriptions (68)

Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.

Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).

All US area codes United States +1 Map of area code 770 — cities & rate centres

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