Red Oak, OK -- U.S. town in Oklahoma Population (2000): 581 Housing Units (2000): 283 Land area (2000): 0.939069 sq. miles (2.432177 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.939069 sq. miles (2.432177 sq. km) FIPS code: 62550 Located within: Oklahoma (OK), FIPS 40 Location: 34.951669 N, 95.080890 W ZIP Codes (1990): 74563 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Red Oak, OK Red Oak