678 Area Code 🌍☎️

The most populous cities in area code 678 are: Atlanta, Marietta, Jonesboro, Gainesville, and Newnan.

Other cities in the 678 area code include: Conyers, Cumming, Buford, Alpharetta, Duluth, Adairsville, Winder, Griffin, Carrollton, Covington, Lawrenceville, Cartersville, Stone Mountain, Villa Rica, Cedartown, Norcross, Flowery Branch, Clermont, Social Circle, Rockmart, Lula, Austell, Statham, Douglasville, Woodstock, Stockbridge, Lilburn, Lithonia, Monroe, Temple, Senoia, Tallapoosa, Concord, Tate, Canton, McDonough, Acworth, Powder Springs, Peachtree City, Jackson, Snellville, Barnesville, Lithia Springs, Dallas, Scottdale, Bowdon, Buchanan, Luthersville, Kingston, Bremen, Grantville, Roopville, Fayetteville, Ball Ground, and Zebulon.

Atlanta is the capital of and the most populous city in the U.S. state of Georgia, with an estimated 2015 population of 463,878. Atlanta is the cultural and economic center of the Atlanta metropolitan area, home to 5,710,795 people and the ninth largest metropolitan area in the United States. Atlanta is the county seat of Fulton County, and a small portion of the city extends eastward into DeKalb County.In 1837, Atlanta was founded at the intersection of two railroad lines, and the city rose from the ashes of the American Civil War to become a national center of commerce. In the decades following the Civil Rights Movement, the city earned a reputation as "too busy to hate" for the relatively progressive views of its citizens and leaders compared to other cities in the Deep South. Atlanta attained international prominence, and it became the primary transportation hub of the Southeastern United States, via highway, railroad, and air, with Hartsfield–Jackson Atlanta International Airport being the world's busiest airport since 1998. Atlanta rated an " alpha - " world city that exerts a significant impact upon commerce, finance, research, technology, education, media, art, and entertainment. It ranks 40th among world cities and 8th in the nation with a gross domestic product of $270 billion. Atlanta's economy is considered diverse, with dominant sectors that include logistics, professional and business services, media operations, and information technology. Atlanta has topographic features that include rolling hills and dense tree coverage. Revitalization of Atlanta's neighborhoods, initially spurred by the 1996 Olympics in Atlanta, has intensified in the 21st century, altering the city's demographics, politics, and culture.

Marietta is located in central Cobb County, Georgia, United States, and is the county's seat and largest city.As of the 2010 census, the city had a total population of 56,579. The 2013 estimate is 59,089, making it one of the Atlanta metropolitan area's largest suburbs. Marietta is the fourth largest of the principal cities (by population) of the Atlanta metropolitan statistical area.

Jonesboro is a city in Clayton County, Georgia, United States. The population was 4,724 as of the 2010 census. The city is the county seat of Clayton County. The city's name was originally spelled Jonesborough. During the Civil War, the final skirmish in the Atlanta Campaign was fought here south of Atlanta, cutting off the city and forcing the mayor of Atlanta to surrender at Marietta in early September 1864. The final fall of Atlanta in the Battle of Jonesborough ended up being a decisive point in the nation's history, propelling Abraham Lincoln to re-election two months later, and continuing the war until the Confederacy finally surrendered the following year.

The 678 area code lies within the Eastern Daylight Time Zone (or EDT). The current time in Eastern Daylight Time is 11:00 PM on Mar 07, 2026.