Washington County, Ohio

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Washington County is a county located in the state of Ohio. As of the 2000 census, the population was 63,251. Its county seat is Marietta[2]. The county, the oldest in the state, is named for George Washington.[3] Washington County is included in the Parkersburg-Marietta-Vienna, West Virginia-Ohio Metropolitan Statistical Area.



According to the U.S. Census Bureau, the county has a total area of 640 square miles (1,658 km²).635 square miles (1,645 km²) of it is land and 5 square miles (13 km²) of it (0.78%) is water.

Washington County's southern and eastern boundary is the Ohio River. The Muskingum River, Little Muskingum River, Duck Creek, and the Little Hocking River flow through the county to the Ohio River.[4]

Adjacent counties

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