Area Code Box

Area code 770

Where is area code 770?

Alpharetta, Marietta and McDonough, Georgia

Local time: … (Eastern Time)

StateGeorgia
CountryUnited States
Main citiesAlpharetta, Marietta and McDonough
Time zoneEastern Time
Overlay area codes470, 678 and 943
In service since1995 (created from 404)
Assigned prefixes785
Dialing format(770) XXX-XXXX · +1 770 XXX XXXX from abroad

Look up a 770 number

Enter a 3-digit area code or a full 10-digit number.

Cities and towns in area code 770

Listed by how many phone prefixes (the 3 digits after the area code) are assigned to each place in 770.

Phone companies in area code 770

The carriers that hold the most 770 prefixes. People can move their number to another carrier, so this shows who first issued a number, not who serves it today.

PrefixesCarrier
429Southern Bell Tel & Tel (AT&T)
53New Cingular Wireless PCS (AT&T)
45Verizon Wireless
36Mcimetro Access Transmission Services
36Teleport Communications America
35Comcast IP Phone
28Paetec Itel
22Onvoy

All 785 prefixes in area code 770

Pick the 3 digits after the area code to see that prefix’s city and carrier.

Area codes that overlay 770

Questions

Where is area code 770?
Area code 770 is in Georgia. It serves Alpharetta, Marietta, McDonough, Gainesville and Norcross and 61 other cities and towns.
What time zone is area code 770 in?
Area code 770 uses Eastern Time.
What area codes overlay 770?
470, 678 and 943 serve the same area as 770. New numbers in the area can get any of these codes, which is why local calls need all 10 digits.
Is a call from area code 770 a scam?
The area code alone doesn’t tell you. Most calls from 770 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 770 number, let it go to voicemail.
When did area code 770 start?
770 went into service in 1995. It was created from area code 404.
Can a 770 number be outside Georgia?
Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 770 caller can be anywhere.

Other area codes in Georgia

Area codeMain cities
229Albany, Valdosta and Thomasville
404Atlanta, Decatur and Xxxxxxxxxx
478Macon, Warner Robins and Dublin
706Augusta, Columbus and Athens
762Columbus, Augusta and Rome
912Savannah, Brunswick and Hinesville