Washington County Map, Ohio

Written and Fact-checked by | Updated On: April 30, 2026 | 13:31 ET

Map of Washington County - Washington County is a county located in the U.S. state of Ohio. Washington County Map showing cities, highways, important places and water bodies. Get Where is Washington County located in the map, major cities in Washington county, population, areas, and places of interest.

Map of Washington County, Ohio

Map of Washington County, Ohio

About Washington County Map, Ohio: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.

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About Washington County, Ohio

Washington County is a county located in the U.S. state of Ohio. It's county seat is Marietta. As per 2020 census, the population of Washington County is 59423 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 635.15 sq mi (1,645 km2). Washington County was established on -40697.

Washington County Facts

ContinentNorth America
CountryUnited States
StateOhio
County SeatMarietta
Largest City/TownMarietta
EstablishedJuly 27, 1788
Total Area640 sq mi (1,658 sq km)
Land Area635 sq mi (1,645 sq km)
Water Area5.0 sq mi (13.0 sq km)
Population59,771 (Census 2020)
Population Density94 people per sq mi
Time ZoneEastern Time Zone (ET)
Major HighwaysI-77, US-50, State Route 7, State Route 26, State Route 60
Neighboring CountiesNoble County, Monroe County, Athens County, Meigs County, Wood County (WV), Pleasants County (WV)
Famous ForFirst settlement in the Northwest Territory, Ohio River history, oil and gas heritage
Top AttractionsCampus Martius Museum, Marietta Historic District, Ohio River Museum, Blennerhassett Island nearby
Official Websitehttps://www.washingtongov.org/

Cities and Towns in Washington County, Ohio

  • Marietta (county seat) – 13,385 (Census 2020)
  • Beverly – 1,243 (Census 2020)
  • Belpre (partly) – 6,660 (Census 2020, shared)
  • Lowell – 542 (Census 2020)

Roads and Highways in Washington County, Ohio

Washington County is located along the Ohio River and is connected by highways that serve southeastern Ohio and West Virginia.

  • I-77 – major north-south interstate connecting Ohio to West Virginia
  • US-50 – east-west route running through Marietta
  • State Route 7 – follows the Ohio River corridor
  • State Route 26 – connects Marietta to Athens and rural communities
  • State Route 60 – links Marietta to Zanesville and other inland cities

Neighboring Counties of Washington County

  • Noble County (north)
  • Monroe County (northwest)
  • Athens County (west)
  • Meigs County (southwest)
  • Wood County, West Virginia (east)
  • Pleasants County, West Virginia (southeast)

Top Attractions in Washington County, Ohio

Washington County offers historic sites, riverfront views, and cultural heritage.

  • Campus Martius Museum – museum highlighting early Ohio settlement history
  • Ohio River Museum – exhibits on river navigation and history
  • Marietta Historic District – one of Ohio’s oldest towns with preserved architecture
  • Blennerhassett Island State Park nearby – historic island accessible by boat
  • Rufus Putnam House – historic home of an Ohio pioneer
  • Marietta Riverfront – scenic views along the Ohio River
  • Wayne National Forest nearby – outdoor recreation and hiking
  • Marietta College campus – historic college with cultural events

Distance from Washington County to Nearby Cities

  • Washington County to Columbus – 110 mi (177 km)
  • Washington County to Charleston, WV – 90 mi (145 km)
  • Washington County to Parkersburg, WV – 10 mi (16 km)
  • Washington County to Athens – 50 mi (80 km)
  • Washington County to Wheeling, WV – 75 mi (121 km)

FAQs about Washington County

Where is Washington County located?

Washington County is located in southeastern Ohio along the Ohio River.

What is Washington County known for?

It is known as the site of the first settlement in the Northwest Territory and for its Ohio River history.

What is the population of Washington County?

The population was 59,771 according to the 2020 Census.

What is the county seat of Washington County?

The county seat is Marietta.

Are there attractions in Washington County?

Yes, the county offers museums, historic districts, riverfront views, and nearby state parks.