30087 -- U.S. ZIP code Municipality (1990): STONE MOUNTAIN, Georgia All ZIPs for this municipality (1990): 30083 30087 30088 Population (2000): 32622 Housing Units (2000): 11664 Land area (2000): 23.761685 sq. miles (61.542478 sq. km) Water area (2000): 0.097816 sq. miles (0.253342 sq. km) Total area (2000): 23.859501 sq. miles (61.795820 sq. km) Located within: Georgia (GA) Location: 33.817438 N, 84.131678 W