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area code

Biggest city:





Eastern (GMT -5)

Nearby area codes: 

Zip codes



Major Cities:

Atlanta, Sandy Springs, Roswell, Alpharetta, Union City, Fairburn, Mountain Park, Marietta, Smyrna, Mableton, Kennesaw, Acworth, Powder Springs, Dunwoody, Redan, and Chamblee​


Average Income:





Unemployment Rate:

The 770 area code is a significant part of the telecommunications landscape in the state of Georgia, USA. Geographical Coverage: Area code 770 is a crucial part of the North American Numbering Plan (NANP) and plays a pivotal role in the telecommunications network of North Georgia. It encompasses all or portions of 29 counties in this region, notably including most of the suburbs of Atlanta. This wide coverage makes it a key area code for both residential and business communications in a substantial part of Georgia​​. Establishment and History: This area code was established on June 22, 1995, and became active on August 1, 1995. It was created as a result of a split from the 404 area code. The introduction of area code 770 marked a significant change in the numbering plan of the area, adapting to the growing demand for telephone numbers in the rapidly expanding suburbs of Atlanta​​. Overlap and Dialing Pattern: Area code 770 overlaps with area codes 470 and 678. This overlapping is a common feature in regions where the number of telephone users is high and growing, necessitating the introduction of additional area codes to accommodate the demand. For local calls within the same area code, a 10-digit dialing pattern is required. This standardization in dialing ensures ease of use and consistency in phone number formats across the region​​. In conclusion, area code 770 is a vital component of Georgia's telecommunications infrastructure, serving a large and dynamic region with a rich history and ongoing development. Its establishment and evolution reflect the changing needs and growth of the area it serves, particularly in the suburbs of Atlanta.
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