Population426,280 (July 1, 2025 Census estimate)
River Falls And A Mountain Horizon
Clackamas County, OregonOregon City anchors Clackamas County, where Willamette Falls, Mount Hood and the Museum of the Oregon Territory provide distinct geographic and historical references. The county’s many communities extend from river settings into mountain country, giving local history and outdoor exploration different places to begin. The U.S. Census Bureau estimated 426,280 residents in Clackamas County, Oregon, on July 1, 2025.
Clackamas County at a Glance
Population426,280 (July 1, 2025 Census estimate)
County SeatOregon City
Largest MunicipalityOregon City • Lake Oswego • Milwaukie
Established1843 (organized; NACo County Explorer)
ZIP CodesMount Hood & Willamette Valley
Total Area, Including Water1,882.983 square miles, including water (2020 Census geography)
Major RoutesI-205 • US 26 • OR 99E
Area Codes503 / 971
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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 Clackamas County
Clackamas County
Clackamas was one of Oregon's four original counties in 1843 and was named for the Clackamas people. Oregon City became an early territorial capital and legislative center. Willamette Falls remains an important Indigenous fishing and cultural place, adding a history that is much older than the county's administrative beginnings. Territorial institutions and Indigenous relationships with the falls are related to the same landscape but are not the same story. That distinction gives the county's river setting greater historical depth.
Pair Oregon City's territorial history with interpretation at the Museum of the Oregon Territory. For a different outing, research a Mount Hood destination separately. The falls, city and mountain belong to the same county story but require different visitor planning. Allow the museum visit to shape the questions taken into the wider landscape. Mountain travel and riverside interpretation involve different distances, conditions and access arrangements, even within one county.
What Shapes Us
Local Character
Oregon City anchors Clackamas County, where Willamette Falls, Mount Hood and the Museum of the Oregon Territory provide distinct geographic and historical references.
Community History
Clackamas was one of Oregon's four original counties in 1843 and was named for the Clackamas people. Oregon City became an early territorial capital and legislative center.
Explore Locally
Pair Oregon City's territorial history with interpretation at the Museum of the Oregon Territory. For a different outing, research a Mount Hood destination separately.
Explore the connections between river heritage and mountain landscapes.
A Closer Look
Clackamas County
Places and perspectives from Clackamas 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 Clackamas County
Stories from every corner of Clackamas 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.
Clackamas County Government
County departments, public meetings, records, and services: clackamas.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.
Cecile Trost Elementary School – Elementary; grades KG-06. 800 S Redwood, Canby, OR 97013. 503-263-7130.
LEEP (Life Enrichment Education Program) – Other; grades KG-12. 13455 SE 97th Ave, Clackamas, OR 97015. 503-675-4000.
Colton Elementary School – Elementary; grades KG-05. 30439 S Grays Hill Rd, Colton, OR 97017. 503-824-3536.
Summit Learning Charter – Other; grades KG-12. 30391 SE Hwy 211, Eagle Creek, OR 97022. 503-630-5001.
Gladstone Center for Children and Families – Elementary; grades PK-KG. 18905 Portland Ave, Gladstone, OR 97027. 503-496-3939.
Deep Creek – Damascus K-8 School – Elementary; grades KG-08. 15600 SE 232nd Dr, Damascus, OR 97089. 503-658-3171.
Forest Hills Elementary School – Elementary; grades KG-05. 1133 SW Andrews Rd, Lake Oswego, OR 97034. 503-534-2350.
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.
Kaiser Sunnyside Medical Center – Acute Care Hospitals. 10180 Se Sunnyside Road, Clackamas, OR 97015. 503-652-2880.
Providence Milwaukie Hospital – Acute Care Hospitals. 10150 Se 32Nd Avenue, Milwaukie, OR 97222. 503-513-8300.
Providence Willamette Falls Medical Center – Acute Care Hospitals. 1500 Division Street, Oregon City, OR 97045. 503-656-1631.
Public Safety
Visit Oregon State Police at Oregon government resources. Your county sheriff and local police provide local non-emergency information.
Emergency Services
For an immediate emergency, call 911. Find preparedness resources and official updates through Oregon government resources.
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
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.
Canby Public Library – 220 Ne 2Nd Ave, Canby, OR 97013. 503-266-3394.
Estacada Public Library – 825 Nw Wade St, Estacada, OR 97023. 503-630-8273.
Gladstone Public Library – 135 E Dartmouth St, Gladstone, OR 97027. 503-655-8540.
Happy Valley Public Library – 13793 Se Sieben Park Way, Happy Valley, OR 97015. 503-783-3456.
Lake Oswego Public Library – 706 4Th St, Lake Oswego, OR 97034. 503-675-2539.
Ledding Library – 10660 Se 21St Ave, Milwaukie, OR 97222. 503-786-7580.
Molalla Public Library – 201 E 5Th St, Molalla, OR 97038. 503-829-2593.
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 Clackamas County
Useful answers for residents, visitors and anyone planning their next step.
Local Questions
Clackamas County Questions, Answered
Explore practical details about the county and the organizations that serve it.
426,280 (July 1, 2025 Census estimate). This is a dated Census Bureau estimate, rather than a live resident count.
1,882.983 square miles, including water (2020 Census geography). The total combines land and water area.
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.
Clackamas was one of Oregon’s four original counties in 1843 and was named for the Clackamas people. Oregon City became an early territorial capital and legislative center. Willamette Falls remains an important Indigenous fishing and cultural place, adding a history that is much older than the county’s administrative beginnings. Territorial institutions and Indigenous relationships with the falls are related to the same landscape but are not the same story. That distinction gives the county’s river setting greater historical depth.
Pair Oregon City’s territorial history with interpretation at the Museum of the Oregon Territory. For a different outing, research a Mount Hood destination separately. The falls, city and mountain belong to the same county story but require different visitor planning. Allow the museum visit to shape the questions taken into the wider landscape. Mountain travel and riverside interpretation involve different distances, conditions and access arrangements, even within one county.
The 2020 Census geography figures record 1,870.673 square miles of land and 12.310 square miles of water in Clackamas County. The county’s total area includes both. These are geographic measurements for that Census vintage, not a measurement of current water levels or public recreation access.
In the Census Bureau’s 2025 estimate series, Clackamas County had an estimated 422,483 residents on July 1, 2020, and 426,280 on July 1, 2025. Over that interval, the estimated population increased by 3,797 residents, or about 0.9%. Both figures come from the same estimate vintage, which revises earlier years for a consistent comparison.
Oregon City is the county seat listed for Clackamas County by the National Association of Counties. For an office visit, confirm the specific department’s address before traveling. NACo county profile.
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 Clackamas County
Places to visitStart with these local landmarks, outdoor destinations and community places in Clackamas County.
- Museum of the Oregon Territory
- Mount Hood
- Timberline Lodge
- McLoughlin House
- Canby Ferry
- North Clackamas Aquatic Park
Explore the Clackamas 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.