30273 -- U.S. ZIP code Municipality (1990): REX, Georgia All ZIPs for this municipality (1990): 30273 Population (2000): 11412 Housing Units (2000): 3956 Land area (2000): 6.356070 sq. miles (16.462146 sq. km) Water area (2000): 0.045757 sq. miles (0.118511 sq. km) Total area (2000): 6.401827 sq. miles (16.580657 sq. km) Located within: Georgia (GA) Location: 33.582877 N, 84.269063 W