Explore Oregon county boundaries, county seats and 2020 Census population counts, with a labeled map and a full alphabetical county list.
Oregon has 36 counties, spanning the Pacific Coast, Willamette Valley, Cascade region and eastern Oregon. This county map places Portland, Salem, Eugene, Medford and Bend in their wider county geography. The guide includes labeled boundaries, county seats, 2020 Census population comparisons and the complete county list.
| Feature | Details |
|---|---|
| State Name | Oregon |
| State Abbreviation | OR |
| Capital City | Salem |
| County-level Areas | 36 counties |
| Population (2020 Census) | 4,237,256 |
| Land Area (2020 Census) | 95,996.87 square miles |
County sizes vary substantially across Oregon. Eastern counties often cover large land areas, while several western counties are smaller and more densely populated. Portland is primarily associated with Multnomah County, but its municipal limits also extend into Washington and Clackamas counties. The map shows county boundaries, not those city limits.
Population comparisons below use the April 1, 2020 Census. They are census counts, not current estimates. Using the same year makes the county comparisons consistent.
| County / Equivalent | County Seat / Government Center | Population — 2020 Census |
|---|---|---|
| Multnomah County | Portland | 815,428 |
| Washington County | Hillsboro | 600,372 |
| Clackamas County | Oregon City | 421,401 |
| Lane County | Eugene | 382,971 |
| Marion County | Salem | 345,920 |
| Jackson County | Medford | 223,259 |
| Deschutes County | Bend | 198,253 |
The complete alphabetical list below includes all 36 county-level areas, including the 29 not shown in this population table.
| Format | Download |
|---|---|
| PNG Map | Download Now |
| PDF Printable | Download Now |
| SVG Editable | Download Now |
| GIS Shapefile (ZIP) | Download Now |
❓ How many counties are in Oregon?
Oregon has 36 counties. All county-level areas are identified on this map.
❓ What is the capital of Oregon?
Salem is the state capital.
❓ Which county had the largest population in the 2020 Census?
Multnomah County had 815,428 residents in the 2020 Census. Its county seat or government center is Portland.
❓ What is the largest county in Oregon by land area?
Harney County has the greatest land area in the Census boundary dataset. Land area and population rankings measure different things.
❓ What county is Salem associated with?
Salem is Oregon’s capital and the county seat of Marion County. The city also extends into Polk County.
❓ What county is Eugene in?
Eugene is in Lane County and serves as its county seat.
❓ What county is Bend in?
Bend is the county seat of Deschutes County.
❓ What county is Medford in?
Medford is in Jackson County and is its county seat.
❓ How should I use this county map?
Use a county name or a known county seat to identify the area, then follow its boundary to neighboring counties. City limits and county boundaries are different. This reference map does not show property lines or road navigation.
Boundaries and county names are from U.S. Census Bureau TIGERweb, January 1, 2026 vintage. Population and state land-area figures use 2020 Census geography and counts. County seats and state geography were checked against Oregon State Archives county and county-seat maps. The 2020 population figures are not presented as current estimates.
