Wyaconda, MO -- U.S. city in Missouri Population (2000): 310 Housing Units (2000): 171 Land area (2000): 0.646066 sq. miles (1.673302 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.646066 sq. miles (1.673302 sq. km) FIPS code: 81142 Located within: Missouri (MO), FIPS 29 Location: 40.389693 N, 91.926379 W ZIP Codes (1990): 63474 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Wyaconda, MO Wyaconda