Area Code 678 is located in GA.
Cities located in 678 area code are Gainesville, Jonesboro, Atlanta, Marietta, Stone Mountain, Duluth, Cumming, Atlanta, Conyers, Covington, Douglasville, Lawrenceville, Austell, Lilburn, Winder, Lithia Springs, Cedartown, Bowdon, Adairsville, Stockbridge, Buford, Duluth, Barnesville, Carrollton, Senoia, Kingston, Snellville, Monroe, Alpharetta, Dallas, Peachtree City, Newnan, Bremen, Clermont, Lithonia, Mcdonough, Woodstock, Tate, Acworth, Ball Ground, Social Circle, Smyrna, Canton, Cartersville, Temple, Powder Springs, Zebulon, Tallapoosa, Norcross, Grantville, Griffin, Buchanan, Statham, Morrow, Rockmart, Scottdale, Jackson, Dalton, Villa Rica, Columbus, Fayetteville, Flowery Branch, Decatur, Roopville, Lula, Concord, Luthersville.
Counties located in this area code are Hall County, Clayton County, Fulton County, Cobb County, Dekalb County, Forsyth County, Rockdale County, Newton County, Douglas County, Gwinnett County, Barrow County, Polk County, Carroll County, Bartow County, Henry County, Lamar County, Coweta County, Walton County, Paulding County, Fayette County, Haralson County, Cherokee County, Pickens County, Pike County, Spalding County, Butts County, Whitfield County, Muscogee County, Meriwether County