30058 -- U.S. ZIP code Municipality (1990): CENTERVILLE GWIN, Georgia All ZIPs for this municipality (1990): 30058 Population (2000): 58406 Housing Units (2000): 20363 Land area (2000): 46.028814 sq. miles (119.214077 sq. km) Water area (2000): 0.463657 sq. miles (1.200866 sq. km) Total area (2000): 46.492471 sq. miles (120.414943 sq. km) Located within: Georgia (GA) Location: 33.750257 N, 84.096402 W