Hayward, MO -- U.S. town in Missouri Population (2000): 123 Housing Units (2000): 48 Land area (2000): 0.236015 sq. miles (0.611277 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.236015 sq. miles (0.611277 sq. km) FIPS code: 31186 Located within: Missouri (MO), FIPS 29 Location: 36.396184 N, 89.666114 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Hayward, MO Hayward