Washington County, County in northwestern Oregon, United States.
Washington County sits in northwestern Oregon and includes urban centers, farmland, and the valley of the Tualatin River. Sixteen towns spread across a region that ranges from wooded hills to flat fields.
The administrative unit began as Twality District in 1843 and was among the first organized areas in Oregon Territory. Its current name was adopted in 1849 after further settlement of the region.
The area takes its name from George Washington, adopted in the mid-1800s. Technology companies now shape the landscape alongside farms that have been here for generations.
Hillsboro acts as the county seat and provides orientation for travelers exploring the different towns. Highways link the cities while public transport is available within the larger communities.
The region hosts a major part of the West Coast semiconductor industry. Intel operates several large facilities here that shape local traffic patterns and the working landscape.
Location: Oregon
Inception: 1843
Capital city: Hillsboro
Shares border with: Clatsop County, Columbia County, Multnomah County, Clackamas County, Yamhill County, Tillamook County
Website: http://co.washington.or.us
GPS coordinates: 45.56000,-123.09000
Latest update: December 11, 2025 21:47
St. Johns Bridge
25.5 km
Willamette Stone
27.4 km
Hillsboro Stadium
14.3 km
Course of the Willamette River
27.3 km
Henry Hagg Lake
13.1 km
Tillamook State Forest
15.7 km
Banks-Vernonia State Trail
13 km
L. L. "Stub" Stewart State Park
21.3 km
Burlington Northern Railroad Bridge 5.1
26.8 km
Peace Candle of the World
26.3 km
Rice Northwest Museum of Rocks and Minerals
11.2 km
Tualatin River National Wildlife Refuge
28.3 km
Kelley Point Park
27.3 km
Smith and Bybee Wetlands Natural Area
25.1 km
Bald Peak State Scenic Viewpoint
18.6 km
Beaverton City Library
23.8 km
Hare Field
9.7 km
Orenco Woods Nature Park
15.1 km
Chief Kno-Tah
10.4 km
Holcomb Creek Trestle
15.5 km
Fort William
22.8 km
Hillsboro Public Library
12.2 km
Wapato Bridge
22.6 km
Sherwood Public Library
29.9 km
Cathedral Park
25.7 km
Venetian Theatre
9 km
Sauvie Island Wildlife Area
28.6 km
Noble Woods Park
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