Sylvania 30149 is a census-designated place (CDP) located in DeKalb County, Georgia. The area is located about 15 miles northeast of the city of Atlanta and is part of the Atlanta metropolitan area. The population of Sylvania 30149 was 5,125 according to the 2010 census. The CDP lies within the Druid Hills area, not far from I-285, Scott Boulevard and Stone Mountain. It is a small, mostly residential area with several retail stores, restaurants, and other services.