Washington County, Oregon, USA
County or equivalent
Location overview
Washington County lies in northwestern Oregon, west of Portland, with Hillsboro as its county seat. Much of its landscape is in the fertile Tualatin Valley, where farmland and vineyards meet rapidly developed urban communities. Created as Twality in 1843, it was renamed Washington in 1849. Its communities include Beaverton, Hillsboro, Forest Grove, Sherwood and portions of Portland. Agriculture and a large technology industry are important parts of its economy.