Data / Rankings / Population density / Counties in Oregon

Counties in Oregon by population density

Multnomah County had the highest population density of 36 counties in 2022, at 713.2 inhabitants per km². Harney County had the lowest, at 0.3 inhabitants per km². The median was 9.6 inhabitants per km² and the figure for Oregon was 17.1 inhabitants per km². Source: the U.S. Census Bureau.

Highest713.2Multnomah County
Lowest0.3Harney County
Median9.636 counties
Oregon17.1History

All counties, 2022

CSVChart (SVG)

Multnomah CountyMultnomah County: 713.2 inhabitants per km²713.2Washington CountyWashington County: 319.9 inhabitants per km²319.9Marion CountyMarion County: 113.9 inhabitants per km²113.9Clackamas CountyClackamas County: 87.3 inhabitants per km²87.3Yamhill CountyYamhill County: 58.1 inhabitants per km²58.1Benton CountyBenton County: 55.6 inhabitants per km²55.6Polk CountyPolk County: 46.9 inhabitants per km²46.9Lane CountyLane County: 32.7 inhabitants per km²32.7Columbia CountyColumbia County: 31.4 inhabitants per km²31.4Jackson CountyJackson County: 30.8 inhabitants per km²30.8Deschutes CountyDeschutes County: 26.4 inhabitants per km²26.4Linn CountyLinn County: 22 inhabitants per km²22Josephine CountyJosephine County: 20.7 inhabitants per km²20.7Lincoln CountyLincoln County: 20 inhabitants per km²20Clatsop CountyClatsop County: 19.4 inhabitants per km²19.4Hood River CountyHood River County: 17.8 inhabitants per km²17.8Coos CountyCoos County: 15.8 inhabitants per km²15.8Tillamook CountyTillamook County: 9.6 inhabitants per km²9.6Umatilla CountyUmatilla County: 9.6 inhabitants per km²9.6Douglas CountyDouglas County: 8.6 inhabitants per km²8.6Curry CountyCurry County: 5.6 inhabitants per km²5.6Jefferson CountyJefferson County: 5.5 inhabitants per km²5.5Union CountyUnion County: 5 inhabitants per km²5Klamath CountyKlamath County: 4.6 inhabitants per km²4.6Wasco CountyWasco County: 4.3 inhabitants per km²4.3Crook CountyCrook County: 3.4 inhabitants per km²3.4Morrow CountyMorrow County: 2.3 inhabitants per km²2.3Baker CountyBaker County: 2.1 inhabitants per km²2.1Malheur CountyMalheur County: 1.2 inhabitants per km²1.2Wallowa CountyWallowa County: 0.9 inhabitants per km²0.9Sherman CountySherman County: 0.9 inhabitants per km²0.9Gilliam CountyGilliam County: 0.6 inhabitants per km²0.6Grant CountyGrant County: 0.6 inhabitants per km²0.6Lake CountyLake County: 0.4 inhabitants per km²0.4Wheeler CountyWheeler County: 0.3 inhabitants per km²0.3Harney CountyHarney County: 0.3 inhabitants per km²0.3
inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2022
inhabitants per km²		Change on 2021
1Multnomah County713.2-1.1%
2Washington County319.9-0.4%
3Marion County113.9+0.1%
4Clackamas County87.3-0.2%
5Yamhill County58.1-0.3%
6Benton County55.6+4.6%
7Polk County46.9+0.5%
8Lane County32.70%
9Columbia County31.4+0.7%
10Jackson County30.8-1.1%
11Deschutes County26.4+0.6%
12Linn County22+0.3%
13Josephine County20.7-0.9%
14Lincoln County20-0.5%
15Clatsop County19.4-0.8%
16Hood River County17.8-0.1%
17Coos County15.8-0%
18Tillamook County9.6-1.1%
19Umatilla County9.6+0.1%
20Douglas County8.6+0.1%
21Curry County5.6-0.5%
22Jefferson County5.5+0.9%
23Union County5-0.5%
24Klamath County4.60%
25Wasco County4.3-0.7%
26Crook County3.4+2.4%
27Morrow County2.3-0.7%
28Baker County2.1+0.2%
29Malheur County1.2+0.5%
30Wallowa County0.9+1.2%
31Sherman County0.9+2.2%
32Gilliam County0.6+0.2%
33Grant County0.6-1%
34Lake County0.4+0.8%
35Wheeler County0.3-1.2%
36Harney County0.3-1%

Other periods

About this ranking

Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.

United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.

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Questions

Which county has the highest population density?

Multnomah County, with 713.2 inhabitants per km² in 2022, according to the U.S. Census Bureau.

Which county has the lowest population density?

Harney County, with 0.3 inhabitants per km² in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.

Population density: other rankings

Counties in Oregon: more rankings