Marion County, Oregon
Marion County: county in Oregon, United States
About
Marion County is a county located in the U.S. state of Oregon. As of the 2010 census, the population was 315,335 and a population density of 102 people per km². After 10 years in 2020 county had an estimated population of 349,204 inhabitants. Its county seat is Salem. The county was created 183 years ago in 1842.
County Snapshot
Marion County at a glance
Marion County currently has 21 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
21
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Oregon counties
36
Open related pagesLargest city
SalemPopulation 175,891
Top linked places
Quick Facts about Marion County
| Population | 349,204 (2020) |
| Country | United States of America |
| State | Oregon (United States) |
| Different from | Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County, Marion County |
| Area | 3093 km2 |
| Water as percent of area | 0.85% |
| Land as percent of area | 99.15% |
| Latitude & Longitude | 44.9032,-122.5847 |
| Named for | Francis Marion |
| Capital | Salem |
| Establishment | January 01, 1843 |
| Time Zone | America/Los_Angeles |
| Local time | 06:08:56 (15th April 2026) |
| Density | 113 Pop. per km² as of 2020 |
| Population growth | 9.7% (2010-2020) |
| Weather | 41℉ Light Rain Likely 7-days weather |
Geography
Marion County is located at 44°54'11"N 122°35'5"W (44.9031900, -122.5847300). It has 6 neighbors: Linn County, Clackamas County, Jefferson County, Polk County, Wasco County and Yamhill County.
Marion County map
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The largest city of Marion County is Salem with a population of 175,891. Other cities include, Keizer population 39,593, Woodburn population 26,175, Hayesville population 19,936 and Four Corners population 15,947. See all Marion County cities & populated places.
Marion County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Marion County.
| City Name | Population | Title |
|---|---|---|
| Salem | 175,891 | The capital of Oregon. |
| Keizer | 39,593 | City in Oregon, USA |
| Woodburn | 26,175 | City in Oregon, USA |
| Hayesville | 19,936 | City in Keokuk County, Iowa, United States of America |
| Four Corners | 15,947 | Region of the United States consisting of the southwestern corner of Colorado, northwestern corner of New Mexico, northeastern corner of Arizona and southeastern corner of Utah |
| Silverton | 10,617 | Historic district in the United States |
| Stayton | 8,256 | City in Oregon, USA |
| Aumsville | 4,202 | City in Oregon, USA |
| Mount Angel | 3,650 | Mountain in Oregon, United States of America |
| Hubbard | 3,595 | City in Oregon, USA |
| Jefferson | 3,386 | City in Marion County, Texas, USA |
| Sublimity | 2,784 | City in Oregon, USA |
| Gervais | 2,774 | City in Oregon, USA |
| Turner | 2,130 | City in Oregon, USA |
| Donald | 1,064 | City in Oregon, USA |
| Aurora | 1,039 | City in Oregon, USA |
Weather
Rain likely. Mostly cloudy, with a low around 41.
7-Day ForecastOfficial website of Marion County
Official Website- Salem
Demographics
The population of Marion County increased by 9.7% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 315,335 | - | census |
| 2011 | 318,047 | 0.85% | estimation process |
| 2012 | 319,867 | 0.57% | estimation process |
| 2013 | 321,471 | 0.5% | estimation process |
| 2014 | 324,433 | 0.91% | estimation process |
| 2015 | 329,060 | 1.41% | estimation process |
| 2016 | 335,382 | 1.89% | estimation process |
| 2017 | 340,531 | 1.51% | estimation process |
| 2018 | 345,412 | 1.41% | estimation process |
| 2019 | 347,818 | 0.69% | estimation process |
| 2020 | 349,204 | 0.4% | estimation process |
People born in Marion County (2)
People born in Marion County, including politician Charles S. Moore, politician Winlock W. Steiwer, .
More notable people
Other places with the same name (16)
- Marion County, Indiana county in Oregon, United States with a population of 966,183 people.
- Marion County, Florida county in Florida, United States with a population of 373,513 people.
- Marion County, Ohio county in Ohio, United States with a population of 64,820 people.
- Marion County, West Virginia county in West Virginia, United States with a population of 55,962 people.
- Marion County, Illinois county in Illinois, United States with a population of 37,045 people.
- Marion County, Iowa county in Iowa, United States with a population of 33,168 people.
- Marion County, South Carolina county in South Carolina, United States with a population of 30,158 people.
- Marion County, Alabama county in Alabama, United States with a population of 29,703 people.
- Marion County, Tennessee county in Tennessee, United States with a population of 28,924 people.
- Marion County, Missouri county in northeast Missouri, United States with a population of 28,423 people.
- Marion County, Mississippi county in Mississippi, United States with a population of 24,441 people.
- Marion County, Kentucky county in Kentucky, United States with a population of 19,314 people.
- Marion County, Arkansas county in Arkansas, United States with a population of 16,790 people.
- Marion County, Kansas county in Kansas, United States with a population of 11,652 people.
- Marion County, Texas county in Texas, United States with a population of 9,960 people.
- Marion County, Georgia county in Georgia, United States with a population of 8,516 people.
Oregon Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Multnomah County | 815,637 | County in Oregon, United States |
| Portland | 656,751 | The twenty-sixth most populous city in the United States and the center of the Portland metropolitan area. |
| Washington County | 603,514 | County in Oregon, United States |
| Clackamas County | 421,596 | County in Oregon, United States |
| Lane County | 382,986 | County in Oregon, United States |
| Jackson County | 221,844 | County in Oregon, United States |
| Deschutes County | 201,769 | County in Oregon, United States |
| Salem | 175,891 | The capital of Oregon. |
| Eugene | 173,236 | The second most populous city in Oregon. |
| Linn County | 131,054 | County in Oregon, United States |
| Terrebonne | 117,664 | Census-designated place in Deschutes County, Oregon |
| Douglas County | 111,364 | County in Oregon, United States |
| Hillsboro | 110,985 | The most populous city in Washington County, Oregon. |
| Gresham | 110,031 | The second most populous city in Multnomah County, Oregon. |
| Yamhill County | 107,664 | County in Oregon, United States |
| Bend | 101,886 | The most populous city in Deschutes County, Oregon. |