Data / Rankings / Population / Counties in Oregon

Counties in Oregon by population

Multnomah County had the highest population of 36 counties in 2023, at 793,778. Wheeler County had the lowest, at 1,439. The median was 45,973 and the figure for Oregon was 4.25 million. Source: the U.S. Census Bureau.

Highest793,778Multnomah County
Lowest1,439Wheeler County
Median45,97336 counties
Oregon4,250,392History

All counties, 2023

CSVChart (SVG)

Multnomah CountyMultnomah County: 793,778 persons793,778Washington CountyWashington County: 603,856 persons603,856Clackamas CountyClackamas County: 424,076 persons424,076Lane CountyLane County: 382,091 persons382,091Marion CountyMarion County: 349,966 persons349,966Jackson CountyJackson County: 221,276 persons221,276Deschutes CountyDeschutes County: 208,648 persons208,648Linn CountyLinn County: 131,591 persons131,591Douglas CountyDouglas County: 112,442 persons112,442Yamhill CountyYamhill County: 108,900 persons108,900Benton CountyBenton County: 97,964 persons97,964Polk CountyPolk County: 90,138 persons90,138Josephine CountyJosephine County: 87,949 persons87,949Umatilla CountyUmatilla County: 80,157 persons80,157Klamath CountyKlamath County: 70,332 persons70,332Coos CountyCoos County: 64,578 persons64,578Columbia CountyColumbia County: 53,845 persons53,845Lincoln CountyLincoln County: 50,811 persons50,811Clatsop CountyClatsop County: 41,135 persons41,135Malheur CountyMalheur County: 32,269 persons32,269Tillamook CountyTillamook County: 27,459 persons27,459Crook CountyCrook County: 26,940 persons26,940Wasco CountyWasco County: 26,327 persons26,327Union CountyUnion County: 25,934 persons25,934Jefferson CountyJefferson County: 25,532 persons25,532Hood River CountyHood River County: 23,809 persons23,809Curry CountyCurry County: 23,282 persons23,282Baker CountyBaker County: 16,886 persons16,886Morrow CountyMorrow County: 12,343 persons12,343Lake CountyLake County: 8,302 persons8,302Wallowa CountyWallowa County: 7,654 persons7,654Harney CountyHarney County: 7,458 persons7,458Grant CountyGrant County: 7,228 persons7,228Gilliam CountyGilliam County: 2,033 persons2,033Sherman CountySherman County: 1,964 persons1,964Wheeler CountyWheeler County: 1,439 persons1,439
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2023
persons		Change on 2022
1Multnomah County793,778-0.3%
2Washington County603,856+0.6%
3Clackamas County424,076+0.2%
4Lane County382,091-1.1%
5Marion County349,966+0.5%
6Jackson County221,276-0.4%
7Deschutes County208,648+1.1%
8Linn County131,591+0.8%
9Douglas County112,442+0.2%
10Yamhill County108,900+1.1%
11Benton County97,964+0.7%
12Polk County90,138+0.2%
13Josephine County87,949+0.2%
14Umatilla County80,157+0.5%
15Klamath County70,332-0.2%
16Coos County64,578-0.9%
17Columbia County53,845+0.6%
18Lincoln County50,811+0.1%
19Clatsop County41,135-1.1%
20Malheur County32,269+1.3%
21Tillamook County27,459-0.2%
22Crook County26,940+2.1%
23Wasco County26,327-0.7%
24Union County25,934-0.9%
25Jefferson County25,532+0.8%
26Hood River County23,809-0.9%
27Curry County23,282-1.4%
28Baker County16,886-0.2%
29Morrow County12,343+0.6%
30Lake County8,302-0.5%
31Wallowa County7,654+0.2%
32Harney County7,458-1.1%
33Grant County7,2280%
34Gilliam County2,033+1%
35Sherman County1,964+0.2%
36Wheeler County1,439+0.3%

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

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. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

Which county has the highest population?

Multnomah County, with 793,778 in 2023, according to the U.S. Census Bureau.

Which county has the lowest population?

Wheeler County, with 1,439 in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved 2026-10-08.

Population: other rankings

Counties in Oregon: more rankings