30083 -- U.S. ZIP code Municipality (1990): STONE MOUNTAIN, Georgia All ZIPs for this municipality (1990): 30083 30087 30088 Population (2000): 55791 Housing Units (2000): 20809 Land area (2000): 17.686854 sq. miles (45.808739 sq. km) Water area (2000): 0.132544 sq. miles (0.343287 sq. km) Total area (2000): 17.819398 sq. miles (46.152026 sq. km) Located within: Georgia (GA) Location: 33.795622 N, 84.197710 W