1650 Greene Street, Marietta, OH 45750  (740) 568-4420

Washington County is located in the southeastern portion of the state on the Ohio River. U.S. route 50, State Routes 32 (Appalachian Highway), 60, 260, 550, and 676 cross the county east and west, and Interstate Highway 77, and State Routes 7, 26, 145, 339, 555, and 821 run north and south. The Muskingum, Little Hocking, and Little Muskingum rivers flow into the Ohio River at Washington County.

Marietta, in Washington County, is Ohio’s first city, and is considered the "birthplace of the Northwest Territory." The Campus Martius Museum in Marietta is dedicated to the early history of the Northwest Territory.

Other attractions in Washington County include Wayne National Forest; Ohio River Museum; W.P. Snyder Riverboat Museum, Showboat Becky Thatcher; Valley Gem Sternwheeler; Blennerhassett Island with the Blennerhasset Mansion; Children’s Toy and Doll Museum; the Muskingum and Ohio Rivers; and the Annual Belpre Holiday Lights Festival.

County Manager: Doug Clifton

Transportation Manager: Jeff Perry