Ranking of Oregon Counties By Population in 2023

Updated on June 21, 2025.

Based on the US Census Vintage data estimates, in 2023, the Population for Oregon was 4.25M. Among all Oregon counties, Multnomah County had the highest population (794.27K), followed by Washington County (604.83K), and Clackamas County (424.40K).

The chart below shows the top 10 counties, and the table below shows the ranking of all Oregon counties.

You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.

See this for other years:
Ranking of Oregon Counties By Population in 2023
Multnomah
Washington
Clackamas
Lane
Marion
Jackson
Deschutes
Linn
Douglas
Yamhill
Ranking of Oregon Counties By Population in 2023
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Rank County Population
1 Multnomah County 794271
2 Washington County 604831
3 Clackamas County 424396
4 Lane County 382151
5 Marion County 349874
6 Jackson County 221338
7 Deschutes County 208857
8 Linn County 131509
9 Douglas County 112435
10 Yamhill County 109146
11 Benton County 98566
12 Polk County 90290
13 Josephine County 88001
14 Umatilla County 79872
15 Klamath County 70347
16 Coos County 64557
17 Columbia County 53918
18 Lincoln County 51307
19 Clatsop County 41089
20 Malheur County 32262
21 Tillamook County 27423
22 Crook County 26960
23 Wasco County 26402
24 Union County 26038
25 Jefferson County 25480
26 Hood River County 23811
27 Curry County 23273
28 Baker County 16904
29 Morrow County 12303
30 Lake County 8307
31 Wallowa County 7643
32 Harney County 7451
33 Grant County 7216
34 Gilliam County 2035
35 Sherman County 1954
36 Wheeler County 1436