Oregon Counties by Population (2024)

by Kristen Carney Kristen Carney

Updated: June 20, 2024

The most populous counties in Oregon are Multnomah County with 789,698, Washington County at 598,865, Clackamas County with 423,173, Lane County at 381,181, and Marion County with 346,741. You can get the most current Census population data for all 36 Oregon counties, sorted from the most populous counties in Oregon to the least, according to the 2023 Population Estimates Program.

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Rank County Population
1 Multnomah County 789,698
2 Washington County 598,865
3 Clackamas County 423,173
4 Lane County 381,181
5 Marion County 346,741
6 Jackson County 220,768
7 Deschutes County 208,513
8 Linn County 131,496
9 Douglas County 112,435
10 Yamhill County 108,644
11 Benton County 97,713
12 Polk County 89,805
13 Josephine County 87,821
14 Umatilla County 80,053
15 Klamath County 70,003
16 Coos County 64,212
17 Columbia County 53,880
18 Lincoln County 50,821
19 Clatsop County 41,102
20 Malheur County 32,044
21 Tillamook County 27,417
22 Crook County 26,952
23 Wasco County 26,333
24 Union County 25,944
25 Jefferson County 25,454
26 Hood River County 23,745
27 Curry County 23,296
28 Baker County 16,912
29 Morrow County 12,302
30 Lake County 8,293
31 Wallowa County 7,674
32 Harney County 7,440
33 Grant County 7,215
34 Gilliam County 2,026
35 Sherman County 1,951
36 Wheeler County 1,436

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2023. Population Division. May 2024.

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