Located in Georgia State, the 678 area code is a dialing code in the North American Numbering Plan (NANP) that forms part of the telecommunication service of the state.
Currently, the 678 area code covers 29 counties and 54 cities including Atlanta, Roswell, Alpharetta, and Smyrna. For its part, Atlanta symbolizes the main city of the state and represents a pillar for the economic and cultural activities of the region.
The Georgia telephone network possesses 9 area codes; 4 of them serve the city of Atlanta. The numbering plan area 678 is an overlay for the prefixes 770 and 404, which surround the same municipalities.
1. History
The original codification assigned to Georgia was the 404 area code in 1947. This prefix used to run in the entire region until the activation of the number 912, which reduced the original code to the northern half of the state.
By 1995, the prefix 404 opened the way to the introduction of the 770 area code. This number arrived as part of an overlay plan; becoming in the second codification designated to the northern portion.
For its part the 678 area code started to run on January 6, 1998; created from the dialing number 770, the activation of this second overlay made necessary ten-digit dialing across the entire Atlanta metropolitan area.
More than a decade later, a new prefix would be required for this metro area. On February 26, 2010, the Georgia Public Service Commission integrated the 470 area code to the network, being the 4th prefix installed in the zone.
2. Location
Added on January 2, 1788, Georgia is the 4th state admitted to the union and stands out as the youngest of the 13 former English colonies. Its foundation dates from 1732 by the British soldier and Member of Parliament James Oglethorpe.
Georgia lies in the southeastern region of the country and is constituted by 159 counties and 535 incorporated municipalities, represented by towns and cities.
Located in the Eastern Daylight time zone, the 678 area code covers 7903.41 square miles and possesses 322 non-unique postal area zip codes
Adjacent codes
The 678 area code along with the other 8 codifications compound the telephone network of Georgia. At the present, the 770 code represents the most employed dialing number of the province serving over 4.7 million of the 10.7 million state’s inhabitants.
The newest area code installed in the service is the 470 area code (2010), which is one of the overlays of the prefix 770. On the other hand, the oldest Georgia codification is the dialing code 404 (1947), located in the same region.
3. Most Important Cities in the 678 Area Code
Atlanta
Atlanta stands out as the capital and most populous city of Georgia and the county seat of Fulton County. This city is situated in the foothills of the Blue Ridge Mountains in the northwestern part of the state, just southeast of the Chattahoochee River.
Incorporated on December 29, 1847, Atlanta is considered the economic center of the Atlanta metropolitan area, which encompasses over 6million inhabitants, being the 9th largest metro area of the U.S. in terms of population.
Covering a total area of 136.76 square miles, this city encloses 92 non-unique ZIP codes.
Johns Creek
Incorporated as a city on December 1, 2006, Johns Creek is one of the most recent cities officially integrated into the state. This suburb of Atlanta belongs to Fulton County and lies in its northeastern section.
Despite being one of the newest incorporated cities of the state, John Creek is ranked as the 10th most populous municipality in Georgia, enclosing around 83k inhabitants. Bordered by Alpharetta, Suwanee, Duluth, Berkeley Lake, and Peachtree Corners, this city surrounds a total area of 31.34 squares miles.
Covered by the 678 area code, Johns Creek possesses 5 non-unique ZIP codes: 30005, 30022, 30024, 30076, and 30097.
Alpharetta
Situated in northern Fulton County, Alpharetta is a city included in the Atlanta metropolitan area. Covering a total area of 27.27 square miles, this suburb lies 26 miles of downtown Atlanta and also delimits Johns Creek, Roswell, and Milton.
In terms of population, this city possesses more than 65k inhabitants, being the 13th most populated city of the state and the 5th covered by the prefix 678. Incorporated on December 11, 1858, the city’s name is originated from a derivation of the first letter of the Greek alphabet.
The postal service of Alpharetta is compounded for just 5 non-unique ZIP codes: 30004, 30005, 30009, 30022, and 30023.
4. Other Important Locations and ZIP Codes of the 678 Area Code
The 678 area code serves 29 of the 159 counties in Georgia State; the most relevant are:
- Fulton County: located in north-central Georgia, Fulton is the most populous county of the state, encompassing over 1 million inhabitants. Its county seat is Atlanta that also stands out as the city-state capital. Covering a total area of 534 square miles, this county owns 84 Zip codes.
- DeKalb County: founded on December 9, 1822, and named like this for the Franconian-French military officer Johann De Kalb; this county is situated in the north-central section of the state. It covers a total area of 271 square miles and disposes of 43 ZIP codes.
- Cobb County: it is the third-most populated county in Georgia, with an estimated population of 768k people. Moreover, Cobb County forms part of the Atlanta metropolitan area and owns 28 ZIP codes.
- Cherokee County: settled in 1831, Cherokee encloses nearly 298k inhabitants, being the 7th largest in terms of population of the whole territory. Surrounding 12.53 square miles, the county’s largest area is Woodstock city and possesses 11 Zip codes.
Main Postal and Shipping Services
- Southern Post and Box, LLC, Atlanta, GA, - +1 678-353-7678
- 360 Postal Services, Acworth, GA, - +1 678-403-8762
- QC Direct Mail, Inc, Marietta, GA, - +1 678-355-6770
- Shepherd International Shipping Marietta, Marietta, GA, - +1 678-664-9116
5. FAQs
How many area codes are there in Atlanta?
The 404, 770, 470, and 678 area codes are the four codifications available in Atlanta.
What is the most recent area code added to Georgia?
The newest prefix added to the Georgia network is the 470 area code, installed in 2010.