770
Covers Georgia
In service since 1995
City facts
Alpharetta area codes
Area codes for Georgia: history, overlays and how to dial.
770404678
Alpharetta uses area codes 770, 404 and 678. Because more than one area code serves the same area, local calls need all ten digits.
About these area codes
404
Covers Atlanta, Georgia
678
Covers Atlanta metropolitan area
Overlay with 470 and 943
How to call a number in Alpharetta
Inside the US
1 (770) 555-0123Dial 1, the area code, then the seven-digit number.Local call
(770) 555-0123Overlay area: always include the area code.From outside the US
+1 770 555 0123Use your country's exit code or +, then 1 for the US.Alpharetta is on Eastern Time (ET); check the time before calling from another zone.
Other cities that share these codes
Nearby area codes
| Area code | Used in | Distance |
|---|---|---|
| 470 | Johns Creek | 5 mi |
| 943 | Sandy Springs | 11 mi |
Alpharetta quick facts
Alpharetta was incorporated on December 11, 1858.
Incorporated1858December 11, 1858
CountyFulton CountyGeorgia
Area codes770, 404, 678Population66,355Census ACS estimateZIP codes430004, 30005, 30009…Elevation1,066 ft325 m
Time zoneEastern TimeET
Dates, namesake and elevation from Wikipedia: Alpharetta, Georgia and Wikidata (checked 2026-11-08); population and ZIP codes from the U.S. Census Bureau.
Questions
What area code is Alpharetta?
Alpharetta uses area codes 770, 404 and 678. Because more than one area code serves the same area, local calls need all ten digits.
When did area code 770 start?
Area code 770 dates from 1995.
Do I need to dial the area code for local calls in Alpharetta?
Yes. 770, 404 and 678 share the same area as an overlay, so every local call needs the area code plus the seven-digit number (ten digits).
What time zone is area code 770 in?
Alpharetta is on Eastern Time (ET).
What other cities use area code 770?
Other cities in this network that share 770, 404 and 678 include Johns Creek, Roswell, Sandy Springs.
Sources: Area code 770, Area code 404, Area codes 678, 470, and 943 (Wikipedia) and Wikidata, checked 2026-11-08. Numbering plans change; the North American Numbering Plan Administrator is the official record.