Red Oak, NC -- U.S. town in North Carolina Population (2000): 2723 Housing Units (2000): 1030 Land area (2000): 19.497983 sq. miles (50.499542 sq. km) Water area (2000): 0.008556 sq. miles (0.022159 sq. km) Total area (2000): 19.506539 sq. miles (50.521701 sq. km) FIPS code: 55640 Located within: North Carolina (NC), FIPS 37 Location: 36.031373 N, 77.901734 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Red Oak, NC Red Oak