31075 -- U.S. ZIP code Municipality (1990): RENTZ, Georgia All ZIPs for this municipality (1990): 31075 Population (2000): 1664 Housing Units (2000): 780 Land area (2000): 55.761971 sq. miles (144.422837 sq. km) Water area (2000): 0.068549 sq. miles (0.177542 sq. km) Total area (2000): 55.830520 sq. miles (144.600379 sq. km) Located within: Georgia (GA) Location: 32.370333 N, 82.960915 W