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.
Forest Grove is a city in Washington County, Oregon, United States, 25 miles (40 km) west of Portland. Originally a small farm town, it is now primarily a commuter town in the Portland metro area. Settled in the 1840s, the town was platted in 1850, then incorporated in 1872, making it the first city in Washington County. The population was 21,083 at the 2010 census, an increase of 19.1% over the 2000 figure (17,708).
Hillsboro is a 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. The population was 106,447 at the 2020 census, making Hillsboro the fifth-most populous city in Oregon.
The Tualatin Valley is a farming and suburban region southwest of Portland, Oregon. The valley is formed by the meandering Tualatin River, a tributary of the Willamette River at the northwest corner of the Willamette Valley, east of the Northern Oregon Coast Range. Most of the valley is located within Washington County, separated from Portland by the Tualatin Mountains. Communities in the Tualatin Valley include Banks, Forest Grove, Cornelius, Hillsboro, Aloha, Beaverton, Sherwood, Tigard, and Tualatin.
Oregon Route 8, also known as Oregon Highway 8, is an Oregon state highway which serves the western suburbs of Portland. The road is locally known as Canyon Road and Tualatin Valley Highway, and travels through the center of the Tualatin Valley. Oregon 8 is located entirely within Washington County. The portion of the route from US 26 to Oregon Route 47 is part of the National Highway System, listed as a principal arterial.
The MAX Blue Line is a light rail line serving the Portland metropolitan area in the U.S. state of Oregon. Operated by TriMet as part of the MAX Light Rail system, it connects Hillsboro, Beaverton, Portland, and Gresham. The Blue Line is the longest in the network; it travels approximately 33 miles (53 km) and serves 48 stations from Hatfield Government Center to Cleveland Avenue. It is the busiest of the five MAX lines, having carried an average 55,370 riders each day on weekdays in September 2018. Service 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. It runs later in the evening on Fridays and Saturdays and ends earlier on Sundays.
Hillsboro Central/Southeast 3rd Avenue Transit Center, also known as Hillsboro Transit Center, is a light rail station and transit center on the MAX Blue Line in Hillsboro, Oregon. Opened in 1998, the red-brick station is the 19th stop westbound on the Westside MAX, one stop from the western terminus of the line. Physically the largest station on the line, it is located at a former stop of the Oregon Electric Railway and includes artwork honoring the history of the community.
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 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 Portland and Western Railroad is a 516-mile (830 km) Class II railroad serving the U.S. state of Oregon, and is a wholly owned subsidiary of shortline and regional railroad holding company Genesee & Wyoming Inc. The PNWR includes a subsidiary, the Willamette and Pacific Railroad.
The Westside Express Service (WES) is a commuter rail line in the U.S. state of Oregon serving parts of Washington and Clackamas counties in the Portland metropolitan area. Owned by TriMet and operated by Portland & Western Railroad (P&W), the line is 14.7 miles (23.7 km) long and travels north–south from Beaverton to Wilsonville along a route just west of Oregon Highway 217 and Interstate 5 (I-5). WES consists of five stations and connects with MAX Light Rail at Beaverton Transit Center. Service operates on a 45-minute headway on weekdays during the morning and evening rush hours. In Spring 2022, WES saw a daily ridership of 420 passengers or about 109,000 riders annually.
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.
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 (US 26) is a major cross-state United States Numbered Highway with its western terminus in the U.S. state of Oregon, connecting US 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 in the Portland metropolitan area of Oregon, United States. The north–south road serves as an arterial connection between Burlington and Hillsboro. It intersects with several main roads and highways throughout its route, including Oregon Route 10, Oregon Route 8, Cornell Road, and U.S. Route 26.
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.
The Blue Bus lines were a group of four affiliated privately owned companies that provided bus transit service in the Portland, Oregon metropolitan area in the 1950s and 1960s. The name was unofficial – no company using this or similar name existed in the Portland area – but was in common use in the 1960s, and variations included "Blue Bus lines", "Blue Lines", "blue bus" lines and "blue buses". The Blue Bus companies provided service only between Portland and suburbs outside the city, or within such suburbs, as transit service within the city of Portland was the exclusive franchise of the Portland Traction Company or, after 1956, the Rose City Transit Company (RCT). The "blue buses" were prohibited from making stops inside the city except to pick up passengers destined for points outside RCT's service area. The "blue" name was a reference to the paint scheme worn by most buses of the consortium. By contrast, city transit operator Rose City's buses wore a primarily red paint scheme.
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.
The Forest Grove branch is an abandoned railway line in the state of Oregon, in the United States. It was built by the Oregon Electric Railway and ran 19.1 miles (30.7 km) from Garden Home to Forest Grove via Beaverton and Hillsboro. The MAX Blue Line uses part of the right-of-way between Beaverton and Hillsboro.
OR 99W near McMinnville 
US 26 at Portland 
