Population795,391 (July 1, 2025 Census estimate)
Urban Neighborhoods Along Two Great Rivers
Multnomah County, OregonMultnomah County combines Portland with eastern communities such as Gresham and Troutdale, extending toward the Columbia River Gorge. The lower Willamette area has a long Chinookan history. Its modern county boundaries emerged in 1854, bringing a growing river city and surrounding communities into a separate jurisdiction. The U.S. Census Bureau estimated 795,391 residents in Multnomah County, Oregon, on July 1, 2025.
Multnomah County at a Glance
Population795,391 (July 1, 2025 Census estimate)
County SeatPortland
Largest MunicipalityPortland • Gresham • Troutdale
Established1854
ZIP CodesPortland & Columbia Gorge
Total Area, Including Water465.170 square miles, including water (2020 Census geography)
Major RoutesI-5; I-84; I-205; I-405; US 26; US 30
Area Codes503 / 971
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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 Multnomah County
Multnomah County
Multnomah County was formed in 1854 from portions of Washington and Clackamas counties, following a petition by Portland business interests. Its name is connected with Chinookan peoples of the lower river, whose history in the region long predates the county. Portland became the county seat. The Willamette and Columbia rivers remained central to the area’s development, while eastern communities extended the county’s identity toward the Columbia River Gorge and its surrounding landscape.
Portland supplies a major urban center, but Gresham, Troutdale, Fairview, and Wood Village add other local reference points in Multnomah County. The Columbia River Gorge forms part of its eastern setting, creating a substantial contrast with central-city neighborhoods. A county-wide visit should account for that change in scale and terrain. Selecting a particular community or gorge destination first helps connect the county’s urban life with its broader river landscape.
What Shapes Us
Local Character
Multnomah County combines Portland with eastern communities such as Gresham and Troutdale, extending toward the Columbia River Gorge. The lower Willamette area has a long Chinookan history.
Community History
Multnomah County was formed in 1854 from portions of Washington and Clackamas counties, following a petition by Portland business interests.
Around the County
Portland supplies a major urban center, but Gresham, Troutdale, Fairview, and Wood Village add other local reference points in Multnomah County.
City neighborhoods open toward a great river landscape.
A Closer Look
Multnomah County
Places and perspectives from Multnomah 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 Multnomah County
Stories from every corner of Multnomah 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.
Multnomah County Government
County departments, public meetings, records, and services: multco.us
County profile and official reference links: Oregon Blue Book
Population source: U.S. Census Bureau, 2020 Census. tigerweb.geo.census.gov
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.
Butler Creek Elementary School – Elementary; grades KG-05. 2789 SW Butler Rd, Gresham, OR 97080. 503-762-6100.
Corbett School – Other; grades KG-12. 35800 E Hist Columbia River Hw, Corbett, OR 97019. 503-261-4200.
Arthur Academy – Elementary; grades KG-05. 13717 SE Division St, Portland, OR 97236. 503-252-3753.
East Gresham Elementary School – Elementary; grades KG-05. 900 SE 5th St, Gresham, OR 97080. 503-661-6050.
Hassolo School – High; grades 06-12. 1401 NE 68th Ave, Portland, OR 97213. 503-257-1645.
The Cottonwood School of Civics and Science – Elementary; grades KG-08. 640 S Bancroft St, Portland, OR 97239. 503-244-1697.
Prescott Elementary School – Elementary; grades PK-05. 10410 NE Prescott St, Portland, OR 97220. 503-408-2150.
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.
Legacy Mount Hood Medical Center – Acute Care Hospitals. 24800 Se Stark Street, Gresham, OR 97030. 503-674-1122.
Adventist Health Portland – Acute Care Hospitals. 10123 Se Market Street, Portland, OR 97216. 503-257-2500.
Legacy Emanuel Medical Center – Acute Care Hospitals. 2801 N Gantenbein Avenue, Portland, OR 97227. 503-413-2200.
Legacy Good Samaritan Medical Center – Acute Care Hospitals. 1015 Nw 22Nd Avenue, W121, Portland, OR 97210. 503-413-7682.
Ohsu Hospital And Clinics – Acute Care Hospitals. 3181 Sw Sam Jackson Park Road, Portland, OR 97239. 503-494-9000.
Providence Portland Medical Center – Acute Care Hospitals. 4805 Ne Glisan Street, Portland, OR 97213. 503-215-1111.
Portland Va Medical Center – Acute Care – Veterans Administration. 3710 Sw Us Veterans Hospital, Portland, OR 97239. 503-220-8262.
Public Safety
Multnomah County Sheriff’s Office
Corrections Facilities Division
How do I serve a subpoena to the Sheriff’s Office?
Multnomah County Sheriff’s Office Leads Multi-Agency Transit Mission; 14 Arrested
Multnomah County Sheriff’s Office Identifies Man Found Deceased on October 1st
Multnomah County Sheriff’s Office Investigating Suspicious Death in Fairview
Emergency Services
State Parks
Explore Oregon State Parks, park notices, and reservation information at stateparks.oregon.gov. Check the individual park before traveling.
Trails
Utilities
Identify the provider serving your address before arranging service. Oregon utility consumer information is available at Oregon government resources.
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.
Central Library – 919 Ne 19Th Ave, Portland, OR 97232. 503-988-5403.
Fairview-Columbia Library – 1520 Ne Village St, Fairview, OR 97024. 503-988-5123.
Gresham Library – 385 Nw Miller Ave, Gresham, OR 97030. 503-988-5123.
Troutdale Library – 2451 Sw Cherry Park Rd., Troutdale, OR 97060. 503-988-5123.
Belmont Library – 1038 Cesar Chavez Blvd, Portland, OR 97214. 503-988-5123.
Capitol Hill Library – 10723 Sw Capitol Hwy, Portland, OR 97219. 503-988-5123.
Gregory Heights Library – 7921 Ne Sandy Blvd, Portland, OR 97213. 503-988-5123.
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
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 Multnomah County
Useful answers for residents, visitors and anyone planning their next step.
Local Questions
Multnomah County Questions, Answered
Explore practical details about the county and the organizations that serve it.
795,391 (July 1, 2025 Census estimate). This is a dated Census Bureau estimate, rather than a live resident count.
465.170 square miles, including water (2020 Census geography). The total combines land and water area.
Start with Multnomah County Sheriff’s Office, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with Pathways to Employment, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with Transit Police Unit, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with Search & Rescue, linked from the government source used for this county. Check that page for current details before visiting or submitting a request.
Start with Hiker Dies After Falling from Trail Near Horsetail Falls, 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.
Multnomah County was formed in 1854 from portions of Washington and Clackamas counties, following a petition by Portland business interests. Its name is connected with Chinookan peoples of the lower river, whose history in the region long predates the county. Portland became the county seat. The Willamette and Columbia rivers remained central to the area’s development, while eastern communities extended the county’s identity toward the Columbia River Gorge and its surrounding landscape.
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 Multnomah County
Places to visitStart with these local landmarks, outdoor destinations and community places in Multnomah County.
- Washington Park
- Oregon Museum of Science and Industry
- Portland Art Museum
- Multnomah Falls
- Vista House
- Blue Lake Regional Park
- Oxbow Regional Park
Explore the Multnomah 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.