Coal Mountain is an unincorporated community in Forsyth County, Georgia. The Coal Mountain area lies at the intersection of GA-369 and SR-9. It was once home to a post office that served the small community. North Forsyth High School, North Forsyth Middle School, Coal Mountain Elementary School, Coal Mountain Park, Coal Mountain Baptist Church, and Mountain Lake Church are all located in Coal Mountain. It lies at an elevation of 1220 feet (372 m). Coordinates: 34°16′17″N 84°06′03″W / 34.27139°N 84.10083°W