Washington County Historical First Ancestry Data
ACS 2010-2014 data
482,067 (88.06%) out of the total population of 547,451 reported first ancestry.
| Washington County | % of the Total Population | Oregon | U.S. | |
| Arab | 3,751 | 0.69%, see rank | 0.39% | 0.56% |
| Czech | 2,921 | 0.53%, see rank | 0.54% | 0.47% |
| Danish | 5,636 | 1.03%, see rank | 1.07% | 0.42% |
| Dutch | 12,278 | 2.24%, see rank | 2.27% | 1.40% |
| English | 58,098 | 10.61%, see rank | 11.73% | 8.02% |
| French | 19,060 | 3.48%, see rank | 4.00% | 3.34% |
| German | 101,394 | 18.52%, see rank | 19.70% | 15.03% |
| Greek | 2,146 | 0.39%, see rank | 0.35% | 0.41% |
| Hungarian | 1,896 | 0.35%, see rank | 0.36% | 0.46% |
| Irish | 59,134 | 10.80%, see rank | 12.15% | 10.80% |
| Italian | 20,559 | 3.76%, see rank | 3.78% | 5.52% |
| Norwegian | 19,147 | 3.50%, see rank | 3.85% | 1.42% |
| Polish | 9,578 | 1.75%, see rank | 1.74% | 3.01% |
| Portuguese | 2,540 | 0.46%, see rank | 0.54% | 0.44% |
| Russian | 6,825 | 1.25%, see rank | 1.28% | 0.92% |
| Scotch-Irish | 6,423 | 1.17%, see rank | 1.43% | 0.99% |
| Scottish | 15,818 | 2.89%, see rank | 3.10% | 1.72% |
| Subsaharan African | 4,185 | 0.76%, see rank | 0.53% | 0.95% |
| Swedish | 15,653 | 2.86%, see rank | 2.87% | 1.27% |
| Swiss | 4,084 | 0.75%, see rank | 0.75% | 0.30% |
| Ukrainian | 2,108 | 0.39%, see rank | 0.54% | 0.31% |
| American | 22,034 | 4.02%, see rank | 5.47% | 7.12% |
| Welsh | 5,308 | 0.97%, see rank | 1.07% | 0.57% |
ACS 2008-2012 data
480,657 (90.38%) out of the total population of 531,818 reported first ancestry.
| Washington County | % of the Total Population | Oregon | U.S. | |
| Arab | 3,846 | 0.72%, see rank | 0.42% | 0.53% |
| Czech | 2,859 | 0.54%, see rank | 0.56% | 0.50% |
| Danish | 5,635 | 1.06%, see rank | 1.12% | 0.45% |
| Dutch | 13,294 | 2.50%, see rank | 2.44% | 1.51% |
| English | 61,947 | 11.65%, see rank | 12.61% | 8.53% |
| French | 18,791 | 3.53%, see rank | 4.23% | 3.54% |
| German | 104,268 | 19.61%, see rank | 20.88% | 15.79% |
| Greek | 1,857 | 0.35%, see rank | 0.35% | 0.42% |
| Hungarian | 1,956 | 0.37%, see rank | 0.37% | 0.48% |
| Irish | 63,500 | 11.94%, see rank | 12.62% | 11.36% |
| Italian | 20,951 | 3.94%, see rank | 3.80% | 5.66% |
| Norwegian | 20,687 | 3.89%, see rank | 4.02% | 1.46% |
| Polish | 10,384 | 1.95%, see rank | 1.78% | 3.13% |
| Portuguese | 2,364 | 0.44%, see rank | 0.53% | 0.46% |
| Russian | 6,733 | 1.27%, see rank | 1.29% | 0.97% |
| Scotch-Irish | 7,171 | 1.35%, see rank | 1.52% | 1.07% |
| Scottish | 16,340 | 3.07%, see rank | 3.26% | 1.81% |
| Subsaharan African | 4,179 | 0.79%, see rank | 0.46% | 0.93% |
| Swedish | 16,735 | 3.15%, see rank | 3.07% | 1.34% |
| Swiss | 4,620 | 0.87%, see rank | 0.77% | 0.31% |
| Ukrainian | 2,078 | 0.39%, see rank | 0.52% | 0.31% |
| American | 19,427 | 3.65%, see rank | 5.24% | 6.72% |
| Welsh | 5,216 | 0.98%, see rank | 1.09% | 0.60% |
ACS 2006-2010 data
469,767 (90.92%) out of the total population of 516,665 reported first ancestry.
| Washington County | % of the Total Population | Oregon | U.S. | |
| Arab | 3,807 | 0.74%, see rank | 0.37% | 0.50% |
| Czech | 2,605 | 0.50%, see rank | 0.58% | 0.53% |
| Danish | 5,596 | 1.08%, see rank | 1.15% | 0.48% |
| Dutch | 12,607 | 2.44%, see rank | 2.55% | 1.63% |
| English | 64,127 | 12.41%, see rank | 13.51% | 9.02% |
| French | 19,409 | 3.76%, see rank | 4.42% | 3.77% |
| German | 107,662 | 20.84%, see rank | 21.99% | 16.51% |
| Greek | 2,330 | 0.45%, see rank | 0.35% | 0.44% |
| Hungarian | 1,836 | 0.36%, see rank | 0.38% | 0.51% |
| Irish | 62,654 | 12.13%, see rank | 12.96% | 11.76% |
| Italian | 20,623 | 3.99%, see rank | 3.79% | 5.78% |
| Norwegian | 20,696 | 4.01%, see rank | 4.03% | 1.51% |
| Polish | 9,835 | 1.90%, see rank | 1.78% | 3.24% |
| Portuguese | 2,550 | 0.49%, see rank | 0.55% | 0.47% |
| Russian | 6,593 | 1.28%, see rank | 1.37% | 1.01% |
| Scotch-Irish | 12,300 | 2.38%, see rank | 2.57% | 1.72% |
| Scottish | 17,793 | 3.44%, see rank | 3.45% | 1.92% |
| Subsaharan African | 3,085 | 0.60%, see rank | 0.40% | 0.91% |
| Swedish | 16,133 | 3.12%, see rank | 3.12% | 1.41% |
| Swiss | 4,547 | 0.88%, see rank | 0.82% | 0.33% |
| Ukrainian | 1,875 | 0.36%, see rank | 0.56% | 0.31% |
| American | 16,747 | 3.24%, see rank | 4.88% | 6.28% |
| Welsh | 5,707 | 1.10%, see rank | 1.13% | 0.63% |
ACS 2005-2009 data
473,524 (91.41%) out of the total population of 518,002 reported first ancestry.
| Washington County | % of the Total Population | Oregon | U.S. | |
| Arab | 4,089 | 0.79%, see rank | 0.36% | 0.50% |
| Czech | 2,555 | 0.49%, see rank | 0.61% | 0.54% |
| Danish | 5,936 | 1.15%, see rank | 1.21% | 0.49% |
| Dutch | 13,805 | 2.67%, see rank | 2.68% | 1.68% |
| English | 68,889 | 13.30%, see rank | 14.10% | 9.29% |
| French | 20,735 | 4.00%, see rank | 4.61% | 3.90% |
| German | 112,747 | 21.77%, see rank | 22.57% | 16.89% |
| Greek | 2,076 | 0.40%, see rank | 0.35% | 0.45% |
| Hungarian | 1,884 | 0.36%, see rank | 0.37% | 0.52% |
| Irish | 63,603 | 12.28%, see rank | 13.17% | 12.01% |
| Italian | 20,868 | 4.03%, see rank | 3.80% | 5.91% |
| Norwegian | 21,703 | 4.19%, see rank | 4.15% | 1.55% |
| Polish | 10,076 | 1.95%, see rank | 1.84% | 3.32% |
| Portuguese | 2,468 | 0.48%, see rank | 0.52% | 0.48% |
| Russian | 6,960 | 1.34%, see rank | 1.39% | 1.04% |
| Scotch-Irish | 12,389 | 2.39%, see rank | 2.61% | 1.77% |
| Scottish | 18,733 | 3.62%, see rank | 3.61% | 1.97% |
| Subsaharan African | 2,623 | 0.51%, see rank | 0.35% | 0.88% |
| Swedish | 17,441 | 3.37%, see rank | 3.20% | 1.45% |
| Swiss | 4,838 | 0.93%, see rank | 0.85% | 0.34% |
| Ukrainian | 1,935 | 0.37%, see rank | 0.55% | 0.32% |
| American | 17,032 | 3.29%, see rank | 4.94% | 6.43% |
| Welsh | 5,493 | 1.06%, see rank | 1.15% | 0.65% |
US Census 2000 data
372,635 (83.67%) out of the total population of 445,342 reported first ancestry.
| Washington County | % of the Total Population | Oregon | U.S. | |
| Arab | 1,795 | 0.40%, see rank | 0.21% | 0.36% |
| Czech | 1,386 | 0.31%, see rank | 0.29% | 0.27% |
| Danish | 3,955 | 0.89%, see rank | 0.85% | 0.30% |
| Dutch | 6,907 | 1.55%, see rank | 1.41% | 0.91% |
| English | 36,748 | 8.25%, see rank | 8.58% | 5.91% |
| French | 10,560 | 2.37%, see rank | 2.63% | 2.39% |
| German | 64,224 | 14.42%, see rank | 14.22% | 10.81% |
| Greek | 1,204 | 0.27%, see rank | 0.24% | 0.34% |
| Hungarian | 1,076 | 0.24%, see rank | 0.21% | 0.32% |
| Irish | 30,425 | 6.83%, see rank | 7.07% | 6.85% |
| Italian | 11,309 | 2.54%, see rank | 2.51% | 4.59% |
| Norwegian | 14,608 | 3.28%, see rank | 3.22% | 1.15% |
| Polish | 5,406 | 1.21%, see rank | 1.02% | 2.24% |
| Portuguese | 1,096 | 0.25%, see rank | 0.31% | 0.33% |
| Russian | 2,930 | 0.66%, see rank | 0.79% | 0.68% |
| Scotch-Irish | 6,187 | 1.39%, see rank | 1.69% | 1.17% |
| Scottish | 8,686 | 1.95%, see rank | 1.98% | 1.12% |
| Subsaharan African | 818 | 0.18%, see rank | 0.22% | 0.61% |
| Swedish | 9,000 | 2.02%, see rank | 1.98% | 0.87% |
| Swiss | 2,404 | 0.54%, see rank | 0.51% | 0.19% |
| Ukrainian | 1,210 | 0.27%, see rank | 0.37% | 0.24% |
| American | 24,840 | 5.58%, see rank | 6.39% | 7.33% |
| Welsh | 2,366 | 0.53%, see rank | 0.56% | 0.31% |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.