Stone Mountain, Georgia a member of Main Street America. Stone Mountain is located at (33.805255, -84.171413), at the western base of the quartz monzonite dome monadnock of the same name. While Stone Mountain city proper is completely within DeKalb County, the postal regions designated, and traditionally considered as Stone Mountain include portions of DeKalb and Gwinnett Counties. According to the State of Georgia, the city has a total area of , of which 0.62% is water. According to 2017 US Census Bureau estimates , Stone Mountain has 6,368 residents, a 9.0% increase since 2010. There are 2,519 households with an average of 2.42
Standing Stone State Park of hiking trails are maintained in the park and forest. The most popular trail is the Lake Trail, which descends from the visitor center to Standing Stone Dam and parallels most of the north shore of the lake before reascending to the cabin area. The most substantial trail is the Cooper Mountain Loop Trail, which circles through several miles of the state forest on the slopes of Cooper Mountain before reentering the state park near Overton Lodge. The National Rolley Hole Marbles Championship is held every September at Standing Stone State Park. Rolley hole is a type of marbles game