Northwood, OH -- U.S. city in Ohio Population (2000): 5471 Housing Units (2000): 2121 Land area (2000): 8.403184 sq. miles (21.764146 sq. km) Water area (2000): 0.012614 sq. miles (0.032670 sq. km) Total area (2000): 8.415798 sq. miles (21.796816 sq. km) FIPS code: 57190 Located within: Ohio (OH), FIPS 39 Location: 41.610882 N, 83.499040 W ZIP Codes (1990): 43619 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Northwood, OH Northwood