Ranking of Oregon Counties By Population with Unclassified Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 897.72K people in Oregon with Unclassified ancestry. Among all Oregon counties, Multnomah County had the highest population with Unclassified ancestry (139.14K), followed by Washington County (105.52K), and Clackamas County (90.68K).
The chart and table below shows the top 10 counties with high number of people with Unclassified ancestry.
You can see similar information for other states and for other ancestry groups in Oregon.
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Related Topics: Oregon ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Oregon Counties By Population with Unclassified Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Multnomah County | 139137 |
| 2 | Washington County | 105516 |
| 3 | Clackamas County | 90675 |
| 4 | Lane County | 87122 |
| 5 | Marion County | 65345 |
| 6 | Jackson County | 53507 |
| 7 | Deschutes County | 44802 |
| 8 | Douglas County | 31421 |
| 9 | Linn County | 28225 |
| 10 | Josephine County | 26093 |
| 11 | Yamhill County | 24451 |
| 12 | Umatilla County | 20261 |
| 13 | Benton County | 19950 |
| 14 | Coos County | 18417 |
| 15 | Polk County | 18226 |
| 16 | Klamath County | 16331 |
| 17 | Columbia County | 13999 |
| 18 | Lincoln County | 11319 |
| 19 | Malheur County | 8897 |
| 20 | Clatsop County | 8685 |
| 21 | Crook County | 7988 |
| 22 | Union County | 7638 |
| 23 | Jefferson County | 7631 |
| 24 | Tillamook County | 7477 |
| 25 | Wasco County | 7271 |
| 26 | Curry County | 5874 |
| 27 | Hood River County | 5491 |
| 28 | Baker County | 5080 |
| 29 | Morrow County | 2750 |
| 30 | Lake County | 1887 |
| 31 | Wallowa County | 1793 |
| 32 | Grant County | 1663 |
| 33 | Harney County | 1632 |
| 34 | Sherman County | 494 |
| 35 | Gilliam County | 470 |
| 36 | Wheeler County | 202 |
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