Population611,708 (July 1, 2025 Census estimate)
Valley Communities With Agriculture And Technology
Washington County, OregonHillsboro anchors Washington County in Oregon’s Tualatin Valley, where orchards, vineyards and high-technology industries contribute to a varied local identity. Beaverton, Forest Grove and other communities broaden the county map, with Pacific University and Hagg Lake offering distinct points of interest. The U.S. Census Bureau estimated 611,708 residents in Washington County, Oregon, on July 1, 2025. The county has approximately 724 square miles of land, according to the 2020 Census Gazetteer.
Washington County at a Glance
Population611,708 (July 1, 2025 Census estimate)
County SeatHillsboro
Largest MunicipalityHillsboro • Beaverton • Tigard
Established1843 (organized; NACo County Explorer)
ZIP CodesTualatin Valley
Total Area, Including Water726.634 square miles, including water (2020 Census geography)
Major RoutesUS 26 • OR 217 • OR 8
Area Codes503 / 971
Shop - Dine - Discover
Meet Local Businesses
Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.
Discover Washington County
Washington County
The county began as Tuality District in 1843, one of Oregon's original administrative divisions. It was renamed Washington in 1849, and later boundary changes created neighboring counties. Its modern economy brings agriculture and horticulture together with manufacturing and technology, giving the older valley landscape a continuing role within a changing region. The earlier Tuality name is a useful historical clue, while the current mixture of industries reflects several development periods. University, farm and urban settings each contribute a different community perspective.
Choose Hillsboro for the civic starting point, Forest Grove for a university-town perspective or a specific valley recreation destination. The county's agricultural places and urban centers deserve separate attention, allowing the contrast between them to become part of the experience. A Forest Grove stop and a valley destination can make that contrast tangible. Consult individual public-site information before adding an agricultural business or lakeside activity to the same route.
What Shapes Us
Local Character
Hillsboro anchors Washington County in Oregon's Tualatin Valley, where orchards, vineyards and high-technology industries contribute to a varied local identity.
Community History
The county began as Tuality District in 1843, one of Oregon's original administrative divisions. It was renamed Washington in 1849, and later boundary changes created neighboring counties.
Explore Locally
The county's agricultural places and urban centers deserve separate attention, allowing the contrast between them to become part of the experience.
Discover the valley connections between established roots and new work.
A Closer Look
Washington County
Places and perspectives from Washington County
OPB — Oregon & Regional News
In the first full day of loss, Bend learns more about Silver Rail shooting, mourns the victims
As Bend residents come together to mourn and ask what comes next, OPB journalists are in Central Oregon.…
Read the Story Oct 17, 2026 • 2 min read
Around Washington County
Stories from every corner of Washington County.
In the first full day of loss, Bend learns more about Silver Rail shooting, mourns the victims
As Bend residents come together to mourn and ask what comes next, OPB journalists are in Central Oregon.…
Oct 17, 2026 • 2 min read
OPB’s First Look: New details emerge in Bend school shooting
Multiple people tried to stop the shooter, police said. Here’s your First Look at Saturday’s news.
Oct 17, 2026 • 2 min read
Zelenskyy urges support for new US sanctions on Russia after Trump puts them on hold
Zelenskyy described the move as unfortunate, adding it would encourage Russia to continue its assault. Trump told Congress…
Oct 17, 2026 • 2 min read
Scuffles and fires break out as protesters rally across France, joining students
Demonstrators across France converged with students Saturday to protest rising living costs, as the country's fiscal crisis deepens.
Oct 17, 2026 • 2 min read
Decades after apartheid, South Africans seek justice for crimes of the past
More than three decades after the end of apartheid, families of victims of some of the worst crimes…
Oct 17, 2026 • 2 min read
Shop - Dine - Discover
Meet Local Businesses
Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.
County Resources
Find the Right Local Connection
Start with the organization responsible for the service you need. Follow its official link for current requirements, office locations and availability.
Government
Schools
Public school contacts
Selected local schools from the NCES 2024-2025 directory. Contact the school or district to confirm enrollment, attendance boundaries and current services; this is not a complete school list.
Banks Elementary School – Elementary; grades KG-05. 42350 NW Trellis Way, Banks, OR 97106. 503-324-2772.
Hazeldale Elementary School – Elementary; grades PK-05. 20080 SW Farmington Rd, Aloha, OR 97007. 503-356-2010.
Cornelius Elementary School – Elementary; grades PK-04. 200 N 14th Ave, Cornelius, OR 97113. 503-359-2500.
Gaston Elementary School – Elementary; grades KG-06. 300 Park St, Building B, Gaston, OR 97119. 503-985-7240.
Butternut Creek Elementary School – Elementary; grades KG-06. 20395 SW Florence St, Aloha, OR 97007. 503-844-1390.
West Sylvan Middle School – Middle; grades 06-08. 8111 SW West Slope Dr, Portland, OR 97225. 503-916-5690.
Archer Glen Elementary School – Elementary; grades KG-05. 16155 SW Sunset Blvd, Sherwood, OR 97140. 503-825-5100.
Hospitals
Local hospital contacts
Facility contacts from the CMS Hospital General Information directory, updated July 22, 2026. Contact the facility directly to confirm current services and appointment arrangements.
Hillsboro Medical Center – Acute Care Hospitals. 335 Se 8Th Avenue, Hillsboro, OR 97123. 503-681-1111.
Kaiser Foundation Hospital Westside – Acute Care Hospitals. 2875 Nw Stucki Ave, Hillsboro, OR 97124. 971-310-0100.
Providence St Vincent Medical Center – Acute Care Hospitals. 9205 Sw Barnes Road, Portland, OR 97225. 503-216-1234.
Legacy Meridian Park Medical Center – Acute Care Hospitals. 19300 Sw 65Th Avenue, Tualatin, OR 97062. 503-692-1212.
Cedar Hills Hospital – Psychiatric. 10300 Sw Eastridge Street, Portland, OR 97225. 503-944-5000.
Public Safety
Visit Oregon State Police at Oregon government resources. Your county sheriff and local police provide local non-emergency information.
Emergency Services
State Parks
Explore Oregon State Parks, park notices, and reservation information at stateparks.oregon.gov. Check the individual park before traveling.
Trails
Find walking and hiking destinations through stateparks.oregon.gov and fs.usda.gov. Check the managing agency for current trail access.
Utilities
Libraries
Local library contacts
Locations and public phone numbers are from the IMLS FY2024 Public Libraries Survey. Call the branch to confirm current hours and services before visiting.
Aloha Community Library – 17455 Sw Farmington Rd, Suite 26A, Aloha, OR 97007. 503-259-0185.
Banks Public Library – 42461 Nw Market St, Banks, OR 97106. 503-324-1382.
Beaverton City Library – 12375 Sw 5Th St, Beaverton, OR 97005. 503-644-2197.
Cornelius Public Library – 1370 N Adair St, Cornelius, OR 97113. 503-357-4093.
Forest Grove City Library – 2114 Pacific Ave, Forest Grove, OR 97116. 503-992-3247.
Hillsboro Public Library – 2850 Ne Brookwood Pkwy, Hillsboro, OR 97124. 503-615-6500.
Courts
Find Oregon circuit courts, court locations, and public information at courts.oregon.gov.
DMV
Oregon — Schedule, Cancel or Change an Appointment
Oregon — Driver license applications for adults
Transportation
Find road conditions and travel alerts at Oregon road conditions. Oregon transportation information is available at Oregon government resources.
Postal Services
USPS location finder — Search by street address, city or ZIP Code for nearby post offices, collection boxes and available services.
USPS ZIP Code lookup — Find the mailing ZIP Code for a specific street address.
USPS Hold Mail — Arrange a temporary mail hold and review identity-verification requirements.
USPS change of address and forwarding — Review forwarding options and submit an address-change request through USPS.
USPS package pickup — Check pickup availability for your address and schedule eligible shipments.
Veterans
National services available to local residents
VA accredited representatives — Find help with VA claims and benefit applications.
VA health care applications — Review application options and supporting information.
VA disability claims — Find the official steps for submitting a disability claim.
GI Bill and education benefits — Review how to apply for VA education benefits.
Veteran career and employment support — Explore VA employment, training and career assistance.
Employment
National services available to local residents
USAJOBS federal employment — Search federal openings by location and occupation.
Apprenticeship Finder — Search apprenticeship opportunities by location and occupation.
My Next Move career exploration — Explore occupations, industries and career interests.
Government job-training resources — Find routes to state training programs and support for different job seekers.
Unemployment benefit guidance — Find your state program and its application and eligibility information.
Get to Know Washington County
Useful answers for residents, visitors and anyone planning their next step.
Local Questions
Washington County Questions, Answered
Explore practical details about the county and the organizations that serve it.
611,708 (July 1, 2025 Census estimate). This is a dated Census Bureau estimate, rather than a live resident count.
726.634 square miles, including water (2020 Census geography). The total combines land and water area.
Start with Recycling Services, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with Pandemic Recovery/ Rescue Plan, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with Board of County Commissioners, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with Library card, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with these official Oregon resources: Schedule, Cancel or Change an Appointment; Driver license applications for adults; Offices. Choose the page for the service you need, then check its office or online instructions before making a trip. These links cover state services; they do not establish that every transaction is available at a county office.
Use USPS ZIP Code Lookup for the mailing ZIP Code of a specific street address. Use the USPS location finder to search for nearby postal facilities and available services. An address lookup is more useful for mailing than assuming the entire county shares one ZIP Code.
The VA explains how to find and appoint an accredited representative for benefit claims. Contact a representative to confirm availability before appointing them. For education benefits, use the GI Bill application guidance. These are national VA services available to eligible local residents, rather than a listing of county offices.
Search USAJOBS for federal positions and the Apprenticeship Finder for apprenticeship opportunities, using location filters to narrow the results. USAGov job-training guidance points to training programs and state resources. Check each listing for current availability, eligibility and application instructions; a search result does not guarantee an opening in the county.
The county began as Tuality District in 1843, one of Oregon’s original administrative divisions. It was renamed Washington in 1849, and later boundary changes created neighboring counties. Its modern economy brings agriculture and horticulture together with manufacturing and technology, giving the older valley landscape a continuing role within a changing region. The earlier Tuality name is a useful historical clue, while the current mixture of industries reflects several development periods. University, farm and urban settings each contribute a different community perspective.
Shop - Dine - Discover
Meet Local Businesses
Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.
My Local Guide
Explore Washington County
Places to visitStart with these local landmarks, outdoor destinations and community places in Washington County.
- Henry Hagg Lake
- Tualatin Valley vineyards
- Pacific University
- Old Scotch Church
- Banks–Vernonia State Trail
Explore the Washington County profile in the Oregon Blue Book
County photograph: Gary Halvorson, Oregon State Archives. County profile and map: Oregon Secretary of State.
Plan your visitCheck current access and hours before heading out.