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File:Ohio_-_Washington_County_Courthouse.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ489571· pop 52· linked from 647 articles

Washington County

Also known as Washington County, Ohio, Washington County, OH

county in Ohio, United States

Key facts

Country: United States
State: Ohio
Founded: July 27, 1788
Named after: George Washington
Seat: Marietta
Largest city: Marietta
Total: 640 sq mi (1,700 km )
Land: 632 sq mi (1,640 km )
Water: 8.0 sq mi (21 km ) 1.3%
Estimate 2025: 58,389
Density: 93/sq mi (36/km )
Time zone: UTC−5 ( Eastern )
Summer dst: UTC−4 ( EDT )
Congressional district: 6th
Website: www .washingtongov .org

via Wikipedia infobox

Wikidata facts

Population: 59771
Area: 640
Official website: www.washingtongov.org
Image: Washington County Courthouse, Putnam Street and 2nd Street, Marietta, OH - 54323500900.jpg
Households: 24803
Licence plate code: 84

Show 5 more facts

Commons category: Washington County, Ohio
inception: 1788-07-27
water as percent of area: 1.3
native label: Washington County
per capita income: 30184

Sources (13)

via Wikidata · CC0

~14 min read

Article

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, OH Micropolitan Statistical Area, which is also included in the Parkersburg-Marietta-Vienna, WV-OH Combined Statistical Area.

Geography