Ross -- U.S. County in Ohio Population (2000): 73345 Housing Units (2000): 29461 Land area (2000): 688.414519 sq. miles (1782.985342 sq. km) Water area (2000): 4.546070 sq. miles (11.774268 sq. km) Total area (2000): 692.960589 sq. miles (1794.759610 sq. km) Located within: Ohio (OH), FIPS 39 Location: 39.341461 N, 83.027332 W Headwords: Ross Ross, OH Ross County Ross County, OH