Underwood, MN -- U.S. city in Minnesota Population (2000): 319 Housing Units (2000): 154 Land area (2000): 0.424047 sq. miles (1.098277 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.424047 sq. miles (1.098277 sq. km) FIPS code: 66172 Located within: Minnesota (MN), FIPS 27 Location: 46.285174 N, 95.870714 W ZIP Codes (1990): 56586 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Underwood, MN Underwood