31216 -- U.S. ZIP code Population (2000): 13850 Housing Units (2000): 5240 Land area (2000): 54.012770 sq. miles (139.892425 sq. km) Water area (2000): 0.204309 sq. miles (0.529158 sq. km) Total area (2000): 54.217079 sq. miles (140.421583 sq. km) Located within: Georgia (GA) Location: 32.730641 N, 83.679307 W