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US area code · Georgia

Area code 770

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.

Missed a call from +1 770?

In the 30 days to September 24, 2026, 640 unwanted calls showing a 770 number were reported to the US Federal Trade Commission, 60% of them recorded messages or robocalls. That puts 770 at #126 of 670 area codes reported.

Other322
Calls pretending to be government, businesses, or family and friends106
Medical & prescriptions68
Reducing your debt (credit cards, mortgage, student loans)46
Before you call back
  • If you do not know anyone in Georgia, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 770 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 770 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 770:

Bellsouth Telecomm Inc Dba Southern Bell Tel & Tel 429New Cingular Wireless PCS, LLC 53Cellco Partnership Dba Verizon Wireless 45Teleport Communications America, LLC 36Comcast Ip Phone, LLC 35Paetec Itel, LLC 28

About 12.3% of the 798 prefixes in use belong to mobile carriers: a 770 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

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