30747 -- U.S. ZIP code Municipality (1990): SUMMERVILLE, Georgia All ZIPs for this municipality (1990): 30747 Population (2000): 16100 Housing Units (2000): 6447 Land area (2000): 182.896889 sq. miles (473.700748 sq. km) Water area (2000): 0.171437 sq. miles (0.444021 sq. km) Total area (2000): 183.068326 sq. miles (474.144769 sq. km) Located within: Georgia (GA) Location: 34.489848 N, 85.329289 W