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Washington County
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Washington County is a county located in the southeastern part of the U.S. state of Ohio. As of the 2020 census, the population was 59,711. Its county seat is Marietta. The county, the oldest in the state, is named for George Washington. Washington County comprises the Marietta, Ohio Micropolitan Statistical Area, which is also included in the Parkersburg–Marietta–Vienna, WV–OH Combined Statistical Area.
Not who you're looking for? Others named Washington County: county in Arkansas, United States · county in Indiana, United States · county in Mississippi, United States · county in Missouri, United States