Newtonsville, OH -- U.S. village in Ohio Population (2000): 492 Housing Units (2000): 180 Land area (2000): 0.243347 sq. miles (0.630267 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.243347 sq. miles (0.630267 sq. km) FIPS code: 55664 Located within: Ohio (OH), FIPS 39 Location: 39.181156 N, 84.084977 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Newtonsville, OH Newtonsville