31050 -- U.S. ZIP code Municipality (1990): KNOXVILLE, Georgia All ZIPs for this municipality (1990): 31050 Population (2000): 999 Housing Units (2000): 371 Land area (2000): 20.213625 sq. miles (52.353045 sq. km) Water area (2000): 0.026028 sq. miles (0.067412 sq. km) Total area (2000): 20.239653 sq. miles (52.420457 sq. km) Located within: Georgia (GA) Location: 32.742085 N, 83.946466 W