Major highways

• Interstate 5
• Interstate 205
• U.S. Route 26
• Oregon Route 6
• Oregon Route 8
• Oregon Route 10
• Oregon Route 47
• Oregon Route 99W
• Oregon Route 210
• Oregon Route 217
• Oregon Route 219

Demographics

As of the census

Census

A census is the procedure of systematically acquiring and recording information about the members of a given population. It is a regularly occurring and official count of a particular population. The term is used mostly in connection with national population and housing censuses; other common...

of 2000, there were 445,342 people, 169,162 households, and 114,015 families residing in the county. The population density

Population density

Population density is a measurement of population per unit area or unit volume. It is frequently applied to living organisms, and particularly to humans...

 was 615 people per square mile (238/km²). There were 178,913 housing units at an average density of 247 per square mile (95/km²). The racial makeup of the county was 82.19% White

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 1.15% Black

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

 or African American

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 0.65% Native American

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 6.68% Asian

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 0.30% Pacific Islander

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 5.86% from other races

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, and 3.17% from two or more races. 11.17% of the population were Hispanic

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

 or Latino

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

 of any race. 17.2% were of German, 9.9% English

English people

The English are a nation and ethnic group native to England, who speak English. The English identity is of early mediaeval origin, when they were known in Old English as the Anglecynn. England is now a country of the United Kingdom, and the majority of English people in England are British Citizens...

, 8.2% Irish

Irish people

The Irish people are an ethnic group who originate in Ireland, an island in northwestern Europe. Ireland has been populated for around 9,000 years , with the Irish people's earliest ancestors recorded having legends of being descended from groups such as the Nemedians, Fomorians, Fir Bolg, Tuatha...

 and 6.7% American ancestry according to Census 2000. 81.7% spoke English, 9.6% Spanish and 1.2% Vietnamese as their first language.

There were 169,162 households out of which 35.60% had children under the age of 18 living with them, 54.50% were married couples living together, 9.00% had a female householder with no husband present, and 32.60% were non-families. 24.70% of all households were made up of individuals and 6.70% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.14.

In the county, the population was spread out with 26.90% under the age of 18, 9.30% from 18 to 24, 34.10% from 25 to 44, 20.90% from 45 to 64, and 8.80% who were 65 years of age or older. The median age was 33 years. For every 100 females there were 99.10 males. For every 100 females age 18 and over, there were 97.00 males.

The median income for a household in the county was $52,122, and the median income for a family was $61,499. Males had a median income of $43,304 versus $31,074 for females. The per capita income

Per capita income

Per capita income or income per person is a measure of mean income within an economic aggregate, such as a country or city. It is calculated by taking a measure of all sources of income in the aggregate and dividing it by the total population...

 for the county was $24,969. About 4.90% of families and 7.40% of the population were below the poverty line, including 8.30% of those under age 18 and 5.30% of those age 65 or over.

History

The Provisional Legislature of Oregon

Provisional Legislature of Oregon

The Provisional Legislature of Oregon was the single-chamber legislative body of the Provisional Government of Oregon. It served the Oregon Country of the Pacific Northwest of North America from 1843 until early 1849 at a time when no country had sovereignty over the region...

 created the county as Twality District on July 5, 1843. Twality was one of the original four districts of the Provisional Government of Oregon

Provisional Government of Oregon

The Provisional Government of Oregon was a popularly elected government created in the Oregon Country, in the Pacific Northwest region of North America. It existed from May 2, 1843 until March 3, 1849. Created at a time when no country had sovereignty over the region, this independent government...

 in Oregon Country

Oregon Country

The Oregon Country was a predominantly American term referring to a disputed ownership region of the Pacific Northwest of North America. The region was occupied by British and French Canadian fur traders from before 1810, and American settlers from the mid-1830s, with its coastal areas north from...

 along with Clackamas

Clackamas County, Oregon

Clackamas County is a county located in the U.S. state of Oregon. The county was named after the Native Americans living in the area, the Clackamas Indians, who were part of the Chinookan people. As of 2010, the population was 375,992...

, Champooick (later Marion

Marion County, Oregon

Marion County is a county located in the U.S. state of Oregon. It was originally named the Champooick District, after Champoeg, a meeting place on the Willamette River. On September 3, 1849, the territorial legislature renamed it in honor of Francis Marion, a Continental Army general of the...

), and Yamhill

Yamhill County, Oregon

-National protected areas:*Siuslaw National Forest *Tualatin River National Wildlife Refuge -Demographics:As of the census of 2000, there were 84,992 people, 28,732 households, and 21,376 families residing in the county. The population density was 119 people per square mile . There were 30,270...

 counties. Columbia, later known as Hillsboro

Hillsboro, Oregon

Hillsboro is the fifth-largest city in the U.S. state of Oregon and is the county seat of Washington County. Lying in the Tualatin Valley on the west side of the Portland metropolitan area, the city is home to many high-technology companies, such as Intel, that compose what has become known as the...

, was selected as the county seat in 1850. Washington County obtained its present boundaries in 1854 with the creation of Columbia County

Columbia County, Oregon

Columbia County is a county located in the U.S. state of Oregon. It was named for the Columbia River, which forms its eastern and northern borders. As of 2010, its population was 49,351. The county seat is St. Helens.-Economy:...

 to the north and Multnomah County

Multnomah County, Oregon

Multnomah County is one of 36 counties in the U.S. state of Oregon. Though smallest in area, it is the most populous as its county seat, Portland, is the state's largest city...

 to the east.

The construction of Canyon Road

Canyon Road

Canyon Road is a road connecting Beaverton and Portland, Oregon, United States. It was the first road between the Tualatin Valley and Portland and contributed significantly to Portland becoming the area's major deep water port, and subsequent early growth of the city.The total modern length is...

 to Beaverton

Beaverton, Oregon

Beaverton is a city in Washington County, Oregon, United States, seven miles west of Portland in the Tualatin River Valley.As of the 2010 census, the population is 90,267. This makes it the second-largest city in the county and Oregon's sixth-largest city...

 helped Portland to consolidate its position as the primary port of Oregon, and defeat the rival efforts of settlements as Oregon City

Oregon City, Oregon

Oregon City was the first city in the United States west of the Rocky Mountains to be incorporated. It is the county seat of Clackamas County, Oregon...

 and Milwaukie

Milwaukie, Oregon

Milwaukie is a city in Clackamas County, Oregon, United States. A very small portion of the city extends into Multnomah County. The population was 20,291 at the 2010 census. Founded in 1848 on the banks of the Willamette River, the city, known as the Dogwood City of the West, was incorporated in...

.

In November 2004, the County and the City of Beaverton

Beaverton, Oregon

Beaverton is a city in Washington County, Oregon, United States, seven miles west of Portland in the Tualatin River Valley.As of the 2010 census, the population is 90,267. This makes it the second-largest city in the county and Oregon's sixth-largest city...

 agreed to a plan where the city would annex both unincorporated residential neighborhoods as well as high-value areas of land. This would result with Cedar Hills

Cedar Hills, Oregon

Cedar Hills is a census-designated place and neighborhood in Washington County, Oregon, near the intersection of highways Oregon Route 217 and U.S. 26...

, Garden Home

Garden Home-Whitford, Oregon

Garden Home-Whitford is a census-designated place consisting of the neighborhoods of Garden Home and the smaller Whitford area in Washington County, Oregon, United States. They are located in the southwest hills of Portland, near Beaverton. As of the 2000 census, the CDP population was 6,931.-...

, Raleigh Hills

Raleigh Hills, Oregon

Raleigh Hills is a census-designated place and neighborhood within the metropolitan area of Portland, Oregon, in the United States. It is located in the southwest hills in Washington County, with Beaverton to the west, West Slope to the north, and Progress and Garden Home to the south...

, West Slope

West Slope, Oregon

West Slope is an unincorporated suburb of Portland, Oregon, U.S. and a census-designated place. It is in Washington County, to the west of Portland's West Hills neighborhood, to the northeast of Raleigh Hills and south of U.S...

 being incorporated by 2010, and the communities of Aloha

Aloha, Oregon

Aloha is a census-designated place and an unincorporated community in Washington County, Oregon, United States. As of the 2010 Census, the population was 49,425.-History:...

, Bethany

Bethany, Oregon

Bethany is an unincorporated community and census-designated place in Washington County, Oregon, United States. It is situated north of U.S. Route 26 near Beaverton, about four miles northwest of Cedar Mill, and is within the Portland metropolitan area...

, and Cedar Mill

Cedar Mill, Oregon

Cedar Mill is a census-designated place and an unincorporated community in Washington County, Oregon, mostly north of U.S. Route 26 and west of the Willamette Stone...

 at some point after that.

Those plans have since been put on hold since after the City of Beaverton attempted to forcibly annex Nike, Inc.

Nike, Inc.

Nike, Inc. is a major publicly traded sportswear and equipment supplier based in the United States. The company is headquartered near Beaverton, Oregon, which is part of the Portland metropolitan area...

's World Headquarters, which would have increased Nike's taxes substantially. Nike successfully lobbied for a law that would prohibit their annexation for 99 years. Since that decision, annexation plans have been halted and Washington County has started urban planning to provide city-level services to the unincorporated urban areas in the county.

See also

• David Hill
  David Hill (Oregon politician)
  David Hill , was an American pioneer and settler of what became Hillsboro, Oregon, United States. He served in the Provisional Government of Oregon in both the executive and legislative branches, and later as a legislator in the first Oregon Territorial Legislature...
  
  
• Tabitha Brown
  Tabitha Brown
  Tabitha Moffatt Brown was an American pioneer emigrant who traveled the Oregon Trail to the Oregon Country. There she assisted in the founding of Tualatin Academy, which would grow to become Pacific University in Forest Grove, Oregon...
  
  
• Joseph Meek
  Joseph Meek
  Joseph Lafayette "Joe" Meek was a trapper, law enforcement official, and politician in the Oregon Country and later Oregon Territory of the United States. A pioneer involved in the fur trade before settling in the Tualatin Valley, Meek would play a prominent role at the Champoeg Meetings of 1843...
  
  
• Washington County Jail
  Washington County Jail (Oregon)
  The Washington County Jail is a log, one-room jail previously used in Oregon. It was built in 1853 and was used until 1870. In 1986, it was listed on the National Register of Historic Places , and is preserved by the Washington County Museum in Washington County, Oregon, United States and is...
  
  
• Washington County Courthouse
  Washington County Courthouse (Oregon)
  The Washington County Courthouse in Hillsboro, Oregon is the courthouse for Washington County, Oregon, in the United States. Washington County was established in 1843 and the first government building was finished in 1852. The current courthouse was built in 1928 with an addition and renovations to...
  
  

Incorporated cities

City	1990 population	2000 population	2010 population	Incorporated	Notes
Banks Banks, Oregon Banks is a city in Washington County, Oregon, United States. The population was 1,777 at the 2010 census. The community was named for settler Robert Banks and his father, John Banks.-Geography:...	563	1,286	1,777	1921
Beaverton Beaverton, Oregon Beaverton is a city in Washington County, Oregon, United States, seven miles west of Portland in the Tualatin River Valley.As of the 2010 census, the population is 90,267. This makes it the second-largest city in the county and Oregon's sixth-largest city...	53,310	76,129	90,267	1893
Cornelius Cornelius, Oregon Cornelius is a city in Washington County, Oregon, United States. The population was 9,652 at the 2000 census. The 2007 estimate is 10,895 residents.-Geography:According to the United States Census Bureau, the city has a total area of , all of it land....	6,148	9,652	11,869	1893
Durham Durham, Oregon Durham is a city in Washington County, Oregon, United States. Incorporated in 1966, the city is surrounded by Tigard and Tualatin and is adjacent to the Bridgeport Village shopping complex. The population was 1,382 at the 2000 census. The 2007 estimate is 1,395 residents.-History:The city was named...	748	1,382	1,351	1966
Forest Grove Forest Grove, Oregon Forest Grove is a city in Washington County, Oregon, United States, west of Portland. Originally a small farm town, it is now primarily a bedroom suburb of Portland. Settled in the 1840s, the town was platted in 1850 and then incorporated in 1872 and was the first city in Washington County...	13,559	17,708	21,083	1872
Gaston Gaston, Oregon Gaston is a city in Washington County, Oregon, United States. The population was 600 at the 2000 census. The 2006 estimate is 630 residents.-Early history:...	563	600	637	1914
Hillsboro Hillsboro, Oregon Hillsboro is the fifth-largest city in the U.S. state of Oregon and is the county seat of Washington County. Lying in the Tualatin Valley on the west side of the Portland metropolitan area, the city is home to many high-technology companies, such as Intel, that compose what has become known as the...	37,520	70,187	91,611	1876	County seat
King City King City, Oregon King City is a city in Washington County, Oregon, United States. Its name was picked arbitrarily by the Tualatin Development Company, Inc., which used a royalty theme in naming the city streets. The population was 1,949 at the 2000 census. The 2006 estimate was 2,350 residents.- History:Created as...	2,060	1,949	3,111	1966
Lake Oswego Lake Oswego, Oregon Lake Oswego is a city located primarily in Clackamas County in the U.S. state of Oregon. Small portions of the city are also located in neighboring Multnomah and Washington counties. Located south of Portland surrounding the Oswego Lake, the town was founded in 1847 and incorporated as Oswego in...	30,576	35,278	36,619	1910	Small portion, most in Clackamas County
North Plains North Plains, Oregon North Plains is a city in Washington County, Oregon, United States, off U.S. 26 on the northwest outskirts of the Portland metropolitan area. The population was 1,605 at the 2000 census; by July 2007 the population was estimated to be 1,813.-Geography:...	972	1,605	1,947	1963
Portland Portland, Oregon Portland is a city located in the Pacific Northwest, near the confluence of the Willamette and Columbia rivers in the U.S. state of Oregon. As of the 2010 Census, it had a population of 583,776, making it the 29th most populous city in the United States...	437,319	529,121	583,776	1851	Small portion, most in Multnomah County
Rivergrove Rivergrove, Oregon Rivergrove is a city in Clackamas, Oregon, United States. A small portion of the city extends into Washington County. Its name comes from a combination of the Tualatin River, which forms its southern border, and Lake Grove, a community that is now part of Lake Oswego...	294	324	289	1971	Small portion, most in Clackamas County
Sherwood Sherwood, Oregon Sherwood is a city in Washington County, Oregon, United States. Located in the southeast corner of the county, it is a residential community in the Tualatin Valley southwest of Portland. The population was 11,791 at the 2000 census. The 2006 estimate is 16,115 residents...	3,093	11,791	18,194	1893
Tigard Tigard, Oregon Tigard is a city in Washington County, Oregon, United States. The population was 48,035 at the 2010 census. As of 2007, Tigard was the state's 12th largest city. Incorporated in 1961, the city is located south of Beaverton and north of Tualatin, and is part of the Portland metropolitan area...	29,344	41,223	48,035	1961
Tualatin Tualatin, Oregon Tualatin is a city located primarily in Washington County in the U.S. state of Oregon. A small portion of the city is also located in neighboring Clackamas County. It is a southwestern suburb in the Portland Metropolitan Area that is located south of Tigard...	15,013	22,791	26,054	1913	Small portion also in Clackamas County
Wilsonville Wilsonville, Oregon Wilsonville is a city primarily in Clackamas County, Oregon, United States. A portion of the northern section of the city is in Washington County. Originally founded as Boones Landing due to the Boones Ferry which crossed the Willamette River at the location, the community became Wilsonville in...	7,106	13,991	19,509	1969	Small portion, most in Clackamas County

Unincorporated communities and CDPs

• Aloha
  Aloha, Oregon
  Aloha is a census-designated place and an unincorporated community in Washington County, Oregon, United States. As of the 2010 Census, the population was 49,425.-History:...
  
  
• Bacona
• Balm Grove
• Bethany
  Bethany, Oregon
  Bethany is an unincorporated community and census-designated place in Washington County, Oregon, United States. It is situated north of U.S. Route 26 near Beaverton, about four miles northwest of Cedar Mill, and is within the Portland metropolitan area...
  
  
• Blooming
  Blooming, Oregon
  Blooming is an unincorporated community in Washington County, Oregon, United States near the Tualatin River, about two miles south of Cornelius. Its elevation is 190 feet . There are several plant nurseries in the area....
  
  
• Bonita
• Bonny Slope
  Bonny Slope, Oregon
  Bonny Slope is an unincorporated community in Washington County, Oregon, United States. Bonny Slope lies on Thompson Road north of Beaverton and northwest of Portland....
  
  
• Bradley Corner
• Buckheaven
• Bull Mountain
  Bull Mountain, Oregon
  Bull Mountain, Oregon is an unincorporated community and census-designated place in Washington County, Oregon, United States. Bull Mountain is located mostly on a hill for which the community is named. It is bordered on the east by Tigard, on the south by King City, and Beaverton lies to the north...
  
  
• Buxton
  Buxton, Oregon
  Buxton is an unincorporated community in Washington County, Oregon, United States, near Oregon Route 47.The Buxton area was settled by Henry T. Buxton in 1884, and the town was named for his family, including his father, also named Henry Buxton, a pioneer of 1841. A post office was established on...
  
  
• Carnation
  Carnation, Oregon
  Carnation is an unincorporated community in Washington County, Oregon, United States. Carnation lies on Oregon Route 47 on the south side of Forest Grove. The community had its own post office from 1905 to 1906 and again from 1914 to around 1933....
  
  
• Cedar Hills
  Cedar Hills, Oregon
  Cedar Hills is a census-designated place and neighborhood in Washington County, Oregon, near the intersection of highways Oregon Route 217 and U.S. 26...
  
  
• Cedar Mill
  Cedar Mill, Oregon
  Cedar Mill is a census-designated place and an unincorporated community in Washington County, Oregon, mostly north of U.S. Route 26 and west of the Willamette Stone...
  
  
• Chehalem
• Cherry Grove
  Cherry Grove, Oregon
  Cherry Grove is an unincorporated community in Washington County, Oregon, United States. Cherry Grove is situated on the north bank of the Tualatin River near where it exits the Northern Oregon Coast Range and enters Patton Valley....
  
  
• Dilley
  Dilley, Oregon
  Dilley is an unincorporated community in Washington County, Oregon, United States. It is located south of Forest Grove and north of the city of Gaston on Oregon Route 47 in the Portland metropolitan area. Settled in the late 1840s, the community was platted in 1874 after the arrival of the railroad...
  
  
• Elmonica
• Farmington
  Farmington, Oregon
  Farmington is an unincorporated community in Washington County, Oregon, United States. It is located on the Tualatin River, a tributary of the Willamette, about eight miles southwest of Beaverton, at the intersection of Oregon Route 10 and River Road. It is about a mile west of the junction of OR...
  
  
• Gales Creek
  Gales Creek, Oregon
  Gales Creek is an unincorporated community in Washington County, Oregon, United States on Oregon Route 8 northwest of Forest Grove in the foothills of the Oregon Coast Range....
  
  
• Garden Home
  Garden Home-Whitford, Oregon
  Garden Home-Whitford is a census-designated place consisting of the neighborhoods of Garden Home and the smaller Whitford area in Washington County, Oregon, United States. They are located in the southwest hills of Portland, near Beaverton. As of the 2000 census, the CDP population was 6,931.-...
  
  
• Glencoe
  Glencoe, Oregon
  Glencoe is a neighborhood and former community in Washington County, Oregon, United States. Founded in 1842, the town, which was north of Hillsboro, died off after 1910 when neighboring North Plains was created to the west...
  
  
• Glenwood
  Glenwood, Washington County, Oregon
  Glenwood is an unincorporated community in Washington County, Oregon, United States, northwest of Forest Grove on Oregon Route 6.The name Glenwood was first used for this locale around 1880. Glenwood post office was established in 1886, though it was not always in the same location...
  
  
• Hayward
  Hayward, Oregon
  Hayward is an unincorporated community in Washington County, Oregon, U.S. It is located off U.S. 26 near Manning, Oregon. It has a cemetery and once had a post office, and before 1891, the neighboring town of Greenville, Oregon had the only nearby post office....
  
  
• Hazeldale
• Helvetia
  Helvetia, Oregon
  Helvetia is a small unincorporated community in Washington County, Oregon. It is located in the Tualatin Valley along U.S. Route 26 northwest of Portland. It was named by Swiss immigrants to Oregon in the 19th century. Notable features are the church, cemetery, the Rice Mineral Museum, Helvetia...
  
  
• Hillside
• Huber
• Kansas City
  Kansas City, Oregon
  Kansas City, Oregon is an unincorporated community in Washington County, Oregon, United States. It is located about west of Portland. Its ZIP code is 97116, the same as the nearby city of Forest Grove....
  
  
• Kinton
  Kinton, Oregon
  Kinton is an unincorporated community in Washington County, Oregon, United States. It is located near the northern shore of the Tualatin River, near the intersection of Oregon Route 210 and River Road, a major county arterial that runs northwest towards Hillsboro...
  
  
• Laurel
  Laurel, Oregon
  Laurel is an unincorporated community in Washington County, Oregon, United States. Settled in 1872, the community is located between Hillsboro and Newberg, in the southern portion of the Tualatin Valley in the foothills of the Chehalem Mountains. The community retains its agricultural heritage...
  
  
• Laurelwood
  Laurelwood, Oregon
  Laurelwood is an unincorporated community in Washington County, Oregon, United States. The community is located southwest of the Portland metropolitan area near Oregon Route 47 along Laurelwood Road, to the east of the city of Gaston and Wapato Lake. Laurelwood, a farming community, has a...
  
  
• Manning
  Manning, Oregon
  Manning is an unincorporated community in Washington County, Oregon, United States on the Sunset Highway .Manning was named for Martin Manning, who took up a land claim there in 1865...
  
  
• Marlene Village
  Marlene Village, Oregon
  Marlene Village is an unincorporated community in Washington County, Oregon, United States. It is located immediately northwest of Cedar Hills and south of the Sunset Highway ....
  
  
• Metzger
  Metzger, Oregon
  Metzger is a census-designated place, in Washington County. As of the 2000 census, the CDP population was 3,354. Its name is derived from the German word for "butcher".- History :...
  
  
• Middleton
  Middleton, Oregon
  Middleton, previously known as Stringtown, is an unincorporated community in Washington County, Oregon, United States. To improve communication between Portland and Lafayette, a post office was established at Middleton in 1869. A rail station was then established on July 1, 1892, soon before the...
  
  
• Midway
  Midway, Washington County, Oregon
  Midway is an unincorporated, rural community near Scholls in Washington County, Oregon, United States.- Geography :Midway is located on Oregon Route 219, approximately nine miles south of Hillsboro, near the Tualatin River to the east. Midway also lends its name to Midway Road, which runs from the...
  
  
• Mountaindale
  Mountaindale, Oregon
  Mountaindale is an unincorporated community in Washington County, Oregon, United States, about four miles northwest of North Plains. Settled in the 1850s, the small community was the longtime home of the Mountaindale Store.-History:...
  
  
• Mulloy
  Mulloy, Oregon
  Mulloy is an unincorporated community in Washington County, Oregon, United States, with a population of 59 in 1920....
  
  
• Norwood
  Norwood, Oregon
  Norwood is an unincorporated community in Washington County, Oregon, United States....
  
  
• Oak Hills
  Oak Hills, Oregon
  Oak Hills is a census-designated place in Washington County, Oregon, United States. The population was 9,050 at the 2000 census. Although not incorporated, Oak Hills is considered a neighborhood of Beaverton...
  
  
• Orenco
  Orenco, Oregon
  Orenco is a former company town in Washington County, Oregon, United States, located between Hillsboro and Aloha. The former community of Orenco now forms the Orenco neighborhood in Hillsboro, which is the site of the Orenco Station housing development.The community was established in 1905 as a...
  
  
• Patton
• Progress
  Progress, Oregon
  Progress, Oregon is a neighborhood in Washington County, Oregon, United States. Originally an unincorporated community that stood apart from any city, most of Progress now lies within the city limits of either Tigard or Beaverton...
  
  
• Raleigh Hills
  Raleigh Hills, Oregon
  Raleigh Hills is a census-designated place and neighborhood within the metropolitan area of Portland, Oregon, in the United States. It is located in the southwest hills in Washington County, with Beaverton to the west, West Slope to the north, and Progress and Garden Home to the south...
  
  
• Reedville
  Reedville, Oregon
  Reedville is an unincorporated community in Washington County, Oregon, United States between Hillsboro and Aloha. Oregon Route 8 runs through the area. Cornelius Pass Road is another main arterial...
  
  
• Rockcreek
  Rockcreek, Oregon
  Rockcreek is a census-designated place in Washington County, Oregon, north of U.S. Route 26. It is named for the Rock Creek neighborhood in the area. As of the 2000 census, the CDP population was 9,404.-Geography:...
  
  
• Roy
  Roy, Oregon
  Roy, Oregon is an unincorporated historic locale in Washington County, Oregon, United States. It is located south of the Sunset Highway and southeast of the city of Banks....
  
  
• Scholls
  Scholls, Oregon
  Scholls, Oregon is an unincorporated community in Washington County, Oregon, United States. It is located along the southern shore of the Tualatin River, near the intersection of Oregon Routes 210 and 219. Scholls is located approximately seven miles north of Newberg, seven miles west of Tigard,...
  
  
• Six Corners
• Somerset West
• Tanasbourne
  Tanasbourne, Oregon
  Tanasbourne, Oregon is a neighborhood in Washington County, Oregon where NW 185th Avenue and U.S. Route 26 intersect. The area sits between Beaverton and Hillsboro, and is generally considered to be south of U.S. 26, north of Walker Road, west of 158th, and east of Cornelius Pass Road...
  
  
• Thatcher
  Thatcher, Oregon
  Thatcher is an unincorporated historic locale in Washington County, Oregon, United States. It was located about three miles north of Forest Grove at the intersection of Hillside and Thatcher roads....
  
  
• Timber
  Timber, Oregon
  Timber is an unincorporated community in Washington County, Oregon, United States. Timber's population is 131, its ZIP code is 97144, it has 59 housing units and its land area is , with a population density of ....
  
  
• Tobias
• Verboort
  Verboort, Oregon
  Verboort is an unincorporated community in Washington County, Oregon, United States. It is located about two miles northeast of Forest Grove, a mile west of Oregon Route 47 in the Tualatin Valley.-History:...
  
  
• Watts
• West Haven
  West Haven-Sylvan, Oregon
  West Haven-Sylvan is a census-designated place in Washington County, Oregon, north of U.S. Route 26. As of the 2000 census, the CDP population was 7,147.-Geography:...
  
  
• West Slope
  West Slope, Oregon
  West Slope is an unincorporated suburb of Portland, Oregon, U.S. and a census-designated place. It is in Washington County, to the west of Portland's West Hills neighborhood, to the northeast of Raleigh Hills and south of U.S...
  
  
• West Union
  West Union, Oregon
  West Union is an unincorporated community in Washington County, Oregon, United States. Founded in 1851, the community had the first school district in the county, and also contains the oldest cemetery in the state and the oldest Baptist church west of the Rocky Mountains...
  
  
• Whitford
• Wilkesboro
  Wilkesboro, Oregon
  Wilkesboro is an unincorporated community in Washington County, Oregon, United States. It is on Oregon Route 6 a mile east of Banks.Wilkesboro was settled in 1845 by its namesake Peyton G. Wilkes, and platted in 1912. The locale was named about the time United Railways built its interurban line...
  
  
• Witch Hazel
  Witch Hazel, Oregon
  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...
  
  

See also

• National Register of Historic Places listings in Washington County, Oregon
  National Register of Historic Places listings in Washington County, Oregon
  The following list presents the full set of National Register of Historic Places listings in Washington County, Oregon, and offers brief descriptive information about each of them. The National Register of Historic Places recognizes buildings, structures, objects, sites, and districts of national,...
  
  
• Washington County Museum
  Washington County Museum
  Washington County Museum is a history museum located in unincorporated Washington County, Oregon, United States at Portland Community College's Rock Creek Campus. Opened in 1975, the museum is operated by the Washington County Historical Society with a mission of preserving the history of the area...
  
  
• L. L. "Stub" Stewart State Park
• Ki-a-Kuts Falls
  Ki-a-Kuts Falls
  Ki-a-Kuts Falls is a tall waterfall on the Tualatin River in Washington County, Oregon, United States. Discovered in 1993 in the more remote upper stretch of the river, the falls were named after the last chief of the local band of Native Americans, Chief Ki-a-Kuts of the Atfalati...
  
  

External links

• Washington County Visitors Association