63474 -- U.S. ZIP code Municipality (1990): WYACONDA, Missouri All ZIPs for this municipality (1990): 63474 Population (2000): 625 Housing Units (2000): 349 Land area (2000): 80.064381 sq. miles (207.365785 sq. km) Water area (2000): 0.145827 sq. miles (0.377691 sq. km) Total area (2000): 80.210208 sq. miles (207.743476 sq. km) Located within: Missouri (MO) Location: 40.354422 N, 91.910633 W