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Boulder, CO Historical First Ancestry Data
ACS 2010-2014 data
90,168 (88.40%) out of the total population of 102,002 reported first ancestry.
| Boulder, CO | % of the Total Population | Colorado | U.S. | |
| Arab | 678 | 0.66%, see rank | 0.39% | 0.56% |
| Czech | 1,183 | 1.16%, see rank | 0.70% | 0.47% |
| Danish | 973 | 0.95%, see rank | 0.82% | 0.42% |
| Dutch | 1,914 | 1.88%, see rank | 1.81% | 1.40% |
| English | 13,190 | 12.93%, see rank | 10.49% | 8.02% |
| French | 4,726 | 4.63%, see rank | 3.48% | 3.34% |
| German | 22,630 | 22.19%, see rank | 20.88% | 15.03% |
| Greek | 957 | 0.94%, see rank | 0.38% | 0.41% |
| Hungarian | 901 | 0.88%, see rank | 0.39% | 0.46% |
| Irish | 14,173 | 13.89%, see rank | 12.04% | 10.80% |
| Italian | 7,093 | 6.95%, see rank | 5.10% | 5.52% |
| Norwegian | 2,300 | 2.25%, see rank | 2.18% | 1.42% |
| Polish | 4,013 | 3.93%, see rank | 2.51% | 3.01% |
| Portuguese | 293 | 0.29%, see rank | 0.21% | 0.44% |
| Russian | 2,910 | 2.85%, see rank | 1.09% | 0.92% |
| Scotch-Irish | 1,775 | 1.74%, see rank | 1.27% | 0.99% |
| Scottish | 3,685 | 3.61%, see rank | 2.56% | 1.72% |
| Subsaharan African | 463 | 0.45%, see rank | 0.73% | 0.95% |
| Swedish | 3,188 | 3.13%, see rank | 2.43% | 1.27% |
| Swiss | 661 | 0.65%, see rank | 0.46% | 0.30% |
| Ukrainian | 348 | 0.34%, see rank | 0.25% | 0.31% |
| American | 4,156 | 4.07%, see rank | 5.18% | 7.12% |
| Welsh | 1,188 | 1.16%, see rank | 0.92% | 0.57% |
ACS 2008-2012 data
92,158 (92.92%) out of the total population of 99,177 reported first ancestry.
| Boulder, CO | % of the Total Population | Colorado | U.S. | |
| Arab | 532 | 0.54%, see rank | 0.36% | 0.53% |
| Czech | 1,167 | 1.18%, see rank | 0.73% | 0.50% |
| Danish | 1,306 | 1.32%, see rank | 0.90% | 0.45% |
| Dutch | 2,250 | 2.27%, see rank | 1.91% | 1.51% |
| English | 14,586 | 14.71%, see rank | 11.19% | 8.53% |
| French | 4,842 | 4.88%, see rank | 3.75% | 3.54% |
| German | 22,822 | 23.01%, see rank | 22.06% | 15.79% |
| Greek | 798 | 0.80%, see rank | 0.40% | 0.42% |
| Hungarian | 1,061 | 1.07%, see rank | 0.42% | 0.48% |
| Irish | 13,862 | 13.98%, see rank | 12.52% | 11.36% |
| Italian | 6,801 | 6.86%, see rank | 5.22% | 5.66% |
| Norwegian | 2,561 | 2.58%, see rank | 2.26% | 1.46% |
| Polish | 4,652 | 4.69%, see rank | 2.55% | 3.13% |
| Portuguese | 358 | 0.36%, see rank | 0.20% | 0.46% |
| Russian | 2,517 | 2.54%, see rank | 1.15% | 0.97% |
| Scotch-Irish | 1,778 | 1.79%, see rank | 1.37% | 1.07% |
| Scottish | 3,813 | 3.84%, see rank | 2.69% | 1.81% |
| Subsaharan African | 263 | 0.27%, see rank | 0.64% | 0.93% |
| Swedish | 3,355 | 3.38%, see rank | 2.64% | 1.34% |
| Swiss | 646 | 0.65%, see rank | 0.48% | 0.31% |
| Ukrainian | 420 | 0.42%, see rank | 0.25% | 0.31% |
| American | 3,643 | 3.67%, see rank | 4.88% | 6.72% |
| Welsh | 1,306 | 1.32%, see rank | 0.93% | 0.60% |
ACS 2006-2010 data
90,535 (93.29%) out of the total population of 97,050 reported first ancestry.
| Boulder, CO | % of the Total Population | Colorado | U.S. | |
| Arab | 574 | 0.59%, see rank | 0.33% | 0.50% |
| Czech | 1,263 | 1.30%, see rank | 0.78% | 0.53% |
| Danish | 1,215 | 1.25%, see rank | 0.95% | 0.48% |
| Dutch | 2,305 | 2.38%, see rank | 1.98% | 1.63% |
| English | 15,511 | 15.98%, see rank | 11.90% | 9.02% |
| French | 4,437 | 4.57%, see rank | 3.96% | 3.77% |
| German | 22,486 | 23.17%, see rank | 22.99% | 16.51% |
| Greek | 629 | 0.65%, see rank | 0.40% | 0.44% |
| Hungarian | 1,103 | 1.14%, see rank | 0.43% | 0.51% |
| Irish | 14,140 | 14.57%, see rank | 12.87% | 11.76% |
| Italian | 6,579 | 6.78%, see rank | 5.18% | 5.78% |
| Norwegian | 2,677 | 2.76%, see rank | 2.34% | 1.51% |
| Polish | 4,460 | 4.60%, see rank | 2.54% | 3.24% |
| Portuguese | 289 | 0.30%, see rank | 0.22% | 0.47% |
| Russian | 3,025 | 3.12%, see rank | 1.23% | 1.01% |
| Scotch-Irish | 2,807 | 2.89%, see rank | 2.21% | 1.72% |
| Scottish | 4,251 | 4.38%, see rank | 2.86% | 1.92% |
| Subsaharan African | 160 | 0.16%, see rank | 0.55% | 0.91% |
| Swedish | 3,434 | 3.54%, see rank | 2.81% | 1.41% |
| Swiss | 536 | 0.55%, see rank | 0.52% | 0.33% |
| Ukrainian | 501 | 0.52%, see rank | 0.27% | 0.31% |
| American | 2,553 | 2.63%, see rank | 4.46% | 6.28% |
| Welsh | 1,080 | 1.11%, see rank | 0.96% | 0.63% |
ACS 2005-2009 data
91,261 (92.43%) out of the total population of 98,737 reported first ancestry.
| Boulder, CO | % of the Total Population | Colorado | U.S. | |
| Arab | 564 | 0.57%, see rank | 0.33% | 0.50% |
| Czech | 1,237 | 1.25%, see rank | 0.80% | 0.54% |
| Danish | 1,142 | 1.16%, see rank | 0.99% | 0.49% |
| Dutch | 2,260 | 2.29%, see rank | 2.06% | 1.68% |
| English | 16,099 | 16.30%, see rank | 12.26% | 9.29% |
| French | 4,263 | 4.32%, see rank | 4.07% | 3.90% |
| German | 22,982 | 23.28%, see rank | 23.49% | 16.89% |
| Greek | 556 | 0.56%, see rank | 0.42% | 0.45% |
| Hungarian | 1,091 | 1.10%, see rank | 0.45% | 0.52% |
| Irish | 14,918 | 15.11%, see rank | 13.00% | 12.01% |
| Italian | 6,143 | 6.22%, see rank | 5.20% | 5.91% |
| Norwegian | 2,758 | 2.79%, see rank | 2.40% | 1.55% |
| Polish | 4,510 | 4.57%, see rank | 2.56% | 3.32% |
| Portuguese | 262 | 0.27%, see rank | 0.22% | 0.48% |
| Russian | 3,085 | 3.12%, see rank | 1.28% | 1.04% |
| Scotch-Irish | 2,788 | 2.82%, see rank | 2.31% | 1.77% |
| Scottish | 3,999 | 4.05%, see rank | 2.90% | 1.97% |
| Subsaharan African | 188 | 0.19%, see rank | 0.55% | 0.88% |
| Swedish | 3,189 | 3.23%, see rank | 2.84% | 1.45% |
| Swiss | 575 | 0.58%, see rank | 0.50% | 0.34% |
| Ukrainian | 527 | 0.53%, see rank | 0.27% | 0.32% |
| American | 2,806 | 2.84%, see rank | 4.64% | 6.43% |
| Welsh | 1,191 | 1.21%, see rank | 0.99% | 0.65% |
US Census 2000 data
78,656 (83.08%) out of the total population of 94,673 reported first ancestry.
| Boulder, CO | % of the Total Population | Colorado | U.S. | |
| Arab | 462 | 0.49%, see rank | 0.24% | 0.36% |
| Czech | 312 | 0.33%, see rank | 0.37% | 0.27% |
| Danish | 596 | 0.63%, see rank | 0.61% | 0.30% |
| Dutch | 947 | 1.00%, see rank | 1.12% | 0.91% |
| English | 8,787 | 9.28%, see rank | 7.68% | 5.91% |
| French | 2,269 | 2.40%, see rank | 2.24% | 2.39% |
| German | 12,730 | 13.45%, see rank | 15.70% | 10.81% |
| Greek | 361 | 0.38%, see rank | 0.28% | 0.34% |
| Hungarian | 453 | 0.48%, see rank | 0.27% | 0.32% |
| Irish | 8,502 | 8.98%, see rank | 7.36% | 6.85% |
| Italian | 4,281 | 4.52%, see rank | 3.69% | 4.59% |
| Norwegian | 2,102 | 2.22%, see rank | 1.83% | 1.15% |
| Polish | 2,094 | 2.21%, see rank | 1.56% | 2.24% |
| Portuguese | 146 | 0.15%, see rank | 0.11% | 0.33% |
| Russian | 2,025 | 2.14%, see rank | 0.69% | 0.68% |
| Scotch-Irish | 2,048 | 2.16%, see rank | 1.52% | 1.17% |
| Scottish | 2,519 | 2.66%, see rank | 1.70% | 1.12% |
| Subsaharan African | 271 | 0.29%, see rank | 0.38% | 0.61% |
| Swedish | 1,910 | 2.02%, see rank | 1.72% | 0.87% |
| Swiss | 486 | 0.51%, see rank | 0.28% | 0.19% |
| Ukrainian | 327 | 0.35%, see rank | 0.19% | 0.24% |
| American | 2,760 | 2.92%, see rank | 5.15% | 7.33% |
| Welsh | 576 | 0.61%, see rank | 0.49% | 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.