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Washington County, Ohio

US county information
NameWashington County
Largest cityMarietta
US Area
Total Area640 sq mi (1657.6 km2)
Land Area635 sq mi (1644.7 km2)
Water Area5 sq mi (13 km2)
Population61778 (2010)
Density38.6/km2 (100/sq mi)
Named forGeorge Washington
Time zoneEastern
Time zoneEastern: UTC-5/-4: -5/-4

     Home | County | Washington County Ohio

Washington County is a county located in the state of Ohio. As of the 2010 census, the population was 61,778. Its county seat is Marietta . The county, the oldest in the state, is named for George Washington. Washington County is included in the Parkersburg-Marietta-Vienna, West Virginia-Ohio Metropolitan Statistical Area.

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