Ranking of Oregon Counties By Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the population of Oregon (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 668,083. Among all Oregon counties, Multnomah County had the highest population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (101,565), followed by Washington County (71,481), and Clackamas County (64,399).
The chart below shows the top 10 Oregon counties, and the table below shows the ranking of all Oregon counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: Oregon ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Oregon Counties By Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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| Rank | County | Number of People |
|---|---|---|
| 1 | Multnomah County | 101565 |
| 2 | Washington County | 71481 |
| 3 | Clackamas County | 64399 |
| 4 | Lane County | 59763 |
| 5 | Marion County | 58589 |
| 6 | Jackson County | 40224 |
| 7 | Deschutes County | 28930 |
| 8 | Douglas County | 26143 |
| 9 | Linn County | 25556 |
| 10 | Josephine County | 19899 |
| 11 | Yamhill County | 17332 |
| 12 | Klamath County | 15812 |
| 13 | Umatilla County | 15548 |
| 14 | Coos County | 14537 |
| 15 | Polk County | 12871 |
| 16 | Columbia County | 12418 |
| 17 | Lincoln County | 9263 |
| 18 | Benton County | 8353 |
| 19 | Clatsop County | 8241 |
| 20 | Malheur County | 6423 |
| 21 | Tillamook County | 5995 |
| 22 | Union County | 5787 |
| 23 | Crook County | 5715 |
| 24 | Curry County | 5208 |
| 25 | Wasco County | 5035 |
| 26 | Jefferson County | 4914 |
| 27 | Baker County | 3599 |
| 28 | Hood River County | 3131 |
| 29 | Morrow County | 2521 |
| 30 | Lake County | 2056 |
| 31 | Harney County | 1987 |
| 32 | Grant County | 1977 |
| 33 | Wallowa County | 1574 |
| 34 | Gilliam County | 478 |
| 35 | Sherman County | 397 |
| 36 | Wheeler County | 362 |