Arcadia, MO -- U.S. city in Missouri Population (2000): 567 Housing Units (2000): 298 Land area (2000): 0.836773 sq. miles (2.167233 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.836773 sq. miles (2.167233 sq. km) FIPS code: 01648 Located within: Missouri (MO), FIPS 29 Location: 37.586840 N, 90.627879 W ZIP Codes (1990): 63621 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Arcadia, MO Arcadia