Dover, OH -- U.S. city in Ohio Population (2000): 12210 Housing Units (2000): 5233 Land area (2000): 5.263767 sq. miles (13.633093 sq. km) Water area (2000): 0.069476 sq. miles (0.179941 sq. km) Total area (2000): 5.333243 sq. miles (13.813034 sq. km) FIPS code: 22456 Located within: Ohio (OH), FIPS 39 Location: 40.526545 N, 81.477769 W ZIP Codes (1990): 44622 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dover, OH Dover