Barnard, MO -- U.S. city in Missouri Population (2000): 257 Housing Units (2000): 115 Land area (2000): 0.155357 sq. miles (0.402374 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.155357 sq. miles (0.402374 sq. km) FIPS code: 03340 Located within: Missouri (MO), FIPS 29 Location: 40.174742 N, 94.822839 W ZIP Codes (1990): 64423 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Barnard, MO Barnard