Area code 770, Telephone prefix in Northern Georgia, US.
Area code 770 serves twenty-nine counties across Northern Georgia and forms a ring around Atlanta's central prefix along Interstate 285. It extends through suburbs and smaller towns surrounding the metropolitan area, covering both densely populated and rural zones.
The Georgia Public Service Commission established this prefix in 1995 by splitting the existing 404 to address telephone number shortages. This division occurred as suburban growth increased demand for new connections outside the city.
This telephone prefix represents suburban communities encircling Atlanta and separates city dwellers from those living beyond the beltway. Many residents identify with their prefix because it shows whether they live inside or outside the metropolitan core.
All calls within this region require ten-digit dialing, including the prefix, even for local connections. Visitors or residents making contacts in this area should note that overlay codes 678, 470, and 943 also cover the same territory.
This prefix area completely encircles the 404 zone, forming a geographic pattern that reflects the boundary between Atlanta proper and its surrounding communities. This ring-shaped arrangement clearly illustrates the spatial division between the urban core and outlying towns.
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