Ranking of Oregon Counties By Population in 2011

Updated on June 21, 2025.

Based on the US Census Vintage data estimates, in 2011, the Population for Oregon was 3.87M. Among all Oregon counties, Multnomah County had the highest population (749.93K), followed by Washington County (541.04K), and Clackamas County (379.64K).

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 2011
Multnomah
Washington
Clackamas
Lane
Marion
Jackson
Deschutes
Linn
Douglas
Yamhill
Ranking of Oregon Counties By Population in 2011
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Rank County Population
1 Multnomah County 749926
2 Washington County 541041
3 Clackamas County 379640
4 Lane County 354119
5 Marion County 318053
6 Jackson County 204798
7 Deschutes County 159683
8 Linn County 118175
9 Douglas County 107257
10 Yamhill County 99708
11 Benton County 86281
12 Josephine County 82722
13 Umatilla County 76810
14 Polk County 75942
15 Klamath County 66322
16 Coos County 62789
17 Columbia County 49408
18 Lincoln County 45877
19 Clatsop County 37241
20 Malheur County 30964
21 Union County 25906
22 Tillamook County 25393
23 Wasco County 25217
24 Curry County 22497
25 Hood River County 22439
26 Jefferson County 21752
27 Crook County 20640
28 Baker County 16069
29 Morrow County 11226
30 Lake County 7908
31 Grant County 7409
32 Harney County 7363
33 Wallowa County 6979
34 Gilliam County 1950
35 Sherman County 1750
36 Wheeler County 1418