Washington County is one of 36 counties in the U.S. state of Oregon and part of the Portland metropolitan area. The 2020 census recorded the population as 600,372, making it the second most populous county in the state and most populous "Washington County" in the United States. Hillsboro is the county seat and largest city, while other major cities include Beaverton, Tigard, Cornelius, Banks, Gaston, Sherwood, North Plains, and Forest Grove, the county's oldest city. Originally named Twality when created in 1843, the Oregon Territorial Legislature renamed it for the nation's first president in 1849 and included the entire northwest corner of Oregon before new counties were created in 1854. The Tualatin River and its drainage basin lie almost entirely within the county, which shares its boundaries with the Tualatin Valley. It is bordered on the west and north by the Northern Oregon Coast Range, on the south by the Chehalem Mountains, and on the north and east by the Tualatin Mountains, or West Hills.
Hillsboro is the fifth-largest city in the U.S. state of Oregon and is the county seat of Washington County. Situated in the Tualatin Valley on the west side of the Portland metropolitan area, the city hosts many high-technology companies, such as Intel, locally known as the Silicon Forest. At the 2020 census, the city's population was 106,447.
The Portland metropolitan area is a metro area in the U.S. states of Oregon and Washington centered on the principal city of Portland, Oregon. The U.S. Office of Management and Budget (OMB) identifies it as the Portland–Vancouver–Hillsboro, OR–WA Metropolitan Statistical Area, a metropolitan statistical area used by the United States Census Bureau (USCB) and other entities. The OMB defines the area as comprising Clackamas, Columbia, Multnomah, Washington, and Yamhill Counties in Oregon, and Clark and Skamania Counties in Washington. The area had a population of 2,512,859 at the 2020 census.
Oregon Route 217 is an Oregon state highway which serves the western suburbs of Portland. OR 217 is a controlled-access highway which connects U.S. Route 26 with Interstate 5.
The MAX Blue Line is a light rail service in Portland, Oregon, United States, operated by TriMet as part of the MAX Light Rail system. It travels east–west for approximately 33 miles (53 km)—the longest in the network—between Hillsboro, Beaverton, Portland, and Gresham and serves 48 stations from Hatfield Government Center to Cleveland Avenue. The line carried an average 55,370 riders each day on weekdays in September 2018, the busiest of the five MAX lines. It runs for 221⁄2 hours per day from Monday to Thursday, with headways of between 30 minutes off-peak and five minutes during rush hour. Service runs later in the evening on Fridays and Saturdays and ends earlier on Sundays.
Beaverton Transit Center is an intermodal passenger transport hub in Beaverton, Oregon, United States. Owned and operated by TriMet, it is served by bus, commuter rail, and light rail. The transit center is MAX Light Rail's 15th station eastbound on the Blue Line and western terminus on the Red Line. It is also the northern terminus of WES Commuter Rail and a hub for bus routes mostly serving the westside communities of the Portland metropolitan area. Beaverton Transit Center is situated on Southwest Lombard Avenue, just north of Southwest Canyon Road in central Beaverton, connected by walkway to Canyon Place Shopping Center. It recorded 9,709 average weekday boardings for all modes in fall 2018, making it TriMet's busiest transit center.
Oregon Route 213 is an Oregon state highway that serves the eastern Willamette Valley between Portland and Salem. It is a north–south route. The route is known as the Cascade Highway, though specific segments are generally better known by more localized names.
Oregon Route 210 is a state highway which runs between the community of Scholls, Oregon and the Raleigh Hills neighborhood west of Portland, terminating at the Sylvan overpass on Highway 26. It has become an important route for both commuters and agriculture through Washington County. Oregon Route 210 is signed from east-to-west; though in actuality it runs in a northeast-to-southwest direction.
Oregon Route 219 is an Oregon state highway which runs between the cities of Hillsboro and Woodburn, Oregon, in the United States. The Hillsboro-Silverton Highway continues further south to Silverton, signed as OR 214. The highway mainly serves local residents and agricultural traffic; despite its proximity to the Portland area it lies outside the Portland Urban Growth Boundary and so maintains its character as a country road.
Oregon Route 47 is an Oregon state highway that runs between the Willamette Valley, near McMinnville, and the city of Clatskanie, along the Columbia River in the northwest part of the state. OR 47 traverses several highways of the Oregon state highway system: part of the Tualatin Valley Highway No. 29, part of the Nehalem Highway No. 102, part of the Sunset Highway No. 47, and the Mist–Clatskanie Highway No. 110.
The Tualatin Valley Highway No. 29 is an Oregon highway which passes through the Tualatin Valley, between the cities of McMinnville and Beaverton. Between McMinnville and Forest Grove, the highway is signed as Oregon Route 47; between Forest Grove and Beaverton it is signed as Oregon Route 8. Oregon 8 becomes Canyon Road in Beaverton east of Hocken Road.
Reedville is an unincorporated community in Washington County, Oregon, United States, located between Hillsboro and Aloha. Oregon Route 8 runs through the area. The community is served by the Hillsboro School District, with some portions of the area within the city limits of Hillsboro.
Delaware Route 48 (DE 48) is a state highway in New Castle County, Delaware. The route runs from DE 41 in Hockessin east to U.S. Route 13 Business in downtown Wilmington. The route passes through suburban areas of Wilmington such as Lancaster Pike, intersecting DE 100 and DE 141. DE 48 continues into Wilmington as Lancaster Avenue and intersects DE 2, where it splits into the one-way pair of Lancaster Avenue eastbound and Second Street westbound. Upon reaching downtown Wilmington, the route intersects Interstate 95 (I-95)/US 202 and DE 4 before continuing to the eastern terminus.
The Tualatin Plains are a prairie area in central Washington County, Oregon, United States. Located around the Hillsboro and Forest Grove areas, the plains were first inhabited by the Atfalati band of the Kalapuya group of Native Americans. Euro-American settlement began in the 1840s.
U.S. Route 26 is a major cross-state United States highway with its western terminus in the U.S. state of Oregon, connecting U.S. Route 101 on the Oregon Coast near Seaside with the Idaho state line east of Nyssa. Local highway names include the Sunset Highway No. 47, Mount Hood Highway No. 26, and John Day Highway No. 5 before continuing into Idaho and beyond.
Cornelius Pass Road is an arterial road over Cornelius Pass in the Tualatin Mountains west of Portland, Oregon, United States, also extending several miles to the south. Running north–south, the road stretches between U.S. Route 30 (US 30) on the north and Kinnaman Street, just south of Oregon Route 8 (OR 8), on the south. The road passes through Washington and Multnomah counties, crossing the Tualatin Mountains at Cornelius Pass, 581 feet (177 m) above sea level. TriMet's MAX Light Rail line travels over the road on a bridge. The section between US 30 in Burlington and U.S. Route 26 in Hillsboro is Oregon Route 127 , known in the Oregon state highway system as Cornelius Pass Highway No. 127.
Witch Hazel is a neighborhood of the city of Hillsboro in Washington County, Oregon, United States. Formerly an unincorporated community, and considered a separate populated place by the United States Geological Survey, it is on the Tualatin Valley Highway and the Southern Pacific railroad line a mile (1.6 km) west of Reedville.
Tualatin Valley Fire & Rescue (TVF&R) is a special-purpose government fire fighting and emergency services district in the Portland metropolitan area of Oregon. Established in 1989 with a merger between Washington County Fire District 1 and the Tualatin Rural Fire Protection District, it primarily provides fire and emergency medical services in eastern Washington County, but also provides services in neighboring Multnomah, Clackamas, and Yamhill counties. It serves unincorporated areas along with the cities of Beaverton, Tigard, Tualatin, West Linn, Wilsonville, and Sherwood, among others. With over 400 firefighters and 27 fire stations, the district is the second largest fire department in the state and has an annual budget of $197 million.
Cornell Road is an east–west street and traffic corridor in the Portland metropolitan area, in Multnomah and Washington counties in the U.S. state of Oregon. It crosses the Tualatin Mountains between the Willamette Valley and the city of Portland on the east and the Tualatin Valley and the city of Hillsboro on the west.
Ride Connection is a private, nonprofit organization that provides fixed bus route and paratransit services in the Portland metropolitan area in the U.S. state of Oregon. It was founded as Volunteer Transport, Inc. on May 26, 1988.
OR 6 near Gales Creek 
US 26 in Beaverton 
