Ranking of Oregon Counties By Population with American Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 192.06K people in Oregon with American ancestry. Among all Oregon counties, Multnomah County had the highest population with American ancestry (35.71K), followed by Washington County (24.96K), and Clackamas County (22.02K).

The chart and table below shows the top 10 counties with high number of people with American ancestry.

You can see similar information for other states and for other ancestry groups in Oregon.

Data Source: US Census Bureau.
Ranking of Oregon Counties By Population with American Ancestry in 2021
Multnomah County
Washington County
Clackamas County
Lane County
Marion County
Jackson County
Deschutes County
Douglas County
Josephine County
Polk County
Ranking of Oregon Counties By Population with American Ancestry in 2021
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Rank County Population
1 Multnomah County 35714
2 Washington County 24959
3 Clackamas County 22020
4 Lane County 15190
5 Marion County 10619
6 Jackson County 8980
7 Deschutes County 8358
8 Douglas County 7459
9 Josephine County 5584
10 Polk County 5496
11 Linn County 5224
12 Yamhill County 5111
13 Umatilla County 4202
14 Coos County 4043
15 Klamath County 3339
16 Benton County 3133
17 Columbia County 2893
18 Clatsop County 1985
19 Wasco County 1822
20 Lincoln County 1766
21 Union County 1595
22 Curry County 1545
23 Crook County 1369
24 Tillamook County 1368
25 Hood River County 1174
26 Grant County 1173
27 Malheur County 1168
28 Harney County 1068
29 Jefferson County 1025
30 Baker County 674
31 Morrow County 588
32 Wallowa County 515
33 Lake County 365
34 Wheeler County 259
35 Gilliam County 186
36 Sherman County 93