63967 -- U.S. ZIP code Municipality (1990): WILLIAMSVILLE, Missouri All ZIPs for this municipality (1990): 63967 Population (2000): 1668 Housing Units (2000): 975 Land area (2000): 121.613485 sq. miles (314.977467 sq. km) Water area (2000): 0.150785 sq. miles (0.390531 sq. km) Total area (2000): 121.764270 sq. miles (315.367998 sq. km) Located within: Missouri (MO) Location: 36.944333 N, 90.482710 W