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Jefferson County School District R-1 Historical First Ancestry Data
ACS 2010-2014 data
478,318 (87.07%) out of the total population of 549,339 reported first ancestry.
| Jefferson County School District R-1 | % of the Total Population | Colorado | U.S. | |
| Arab | 2,014 | 0.37%, see rank | 0.39% | 0.56% |
| Czech | 5,092 | 0.93%, see rank | 0.70% | 0.47% |
| Danish | 5,447 | 0.99%, see rank | 0.82% | 0.42% |
| Dutch | 10,472 | 1.91%, see rank | 1.81% | 1.40% |
| English | 68,551 | 12.48%, see rank | 10.49% | 8.02% |
| French | 22,010 | 4.01%, see rank | 3.48% | 3.34% |
| German | 134,855 | 24.55%, see rank | 20.88% | 15.03% |
| Greek | 2,280 | 0.42%, see rank | 0.38% | 0.41% |
| Hungarian | 2,483 | 0.45%, see rank | 0.39% | 0.46% |
| Irish | 76,775 | 13.98%, see rank | 12.04% | 10.80% |
| Italian | 36,812 | 6.70%, see rank | 5.10% | 5.52% |
| Norwegian | 14,299 | 2.60%, see rank | 2.18% | 1.42% |
| Polish | 17,158 | 3.12%, see rank | 2.51% | 3.01% |
| Portuguese | 858 | 0.16%, see rank | 0.21% | 0.44% |
| Russian | 6,771 | 1.23%, see rank | 1.09% | 0.92% |
| Scotch-Irish | 8,312 | 1.51%, see rank | 1.27% | 0.99% |
| Scottish | 15,447 | 2.81%, see rank | 2.56% | 1.72% |
| Subsaharan African | 1,524 | 0.28%, see rank | 0.73% | 0.95% |
| Swedish | 16,668 | 3.03%, see rank | 2.43% | 1.27% |
| Swiss | 2,677 | 0.49%, see rank | 0.46% | 0.30% |
| Ukrainian | 1,920 | 0.35%, see rank | 0.25% | 0.31% |
| American | 26,542 | 4.83%, see rank | 5.18% | 7.12% |
| Welsh | 5,272 | 0.96%, see rank | 0.92% | 0.57% |
ACS 2008-2012 data
483,699 (89.79%) out of the total population of 538,708 reported first ancestry.
| Jefferson County School District R-1 | % of the Total Population | Colorado | U.S. | |
| Arab | 1,712 | 0.32%, see rank | 0.36% | 0.53% |
| Czech | 5,081 | 0.94%, see rank | 0.73% | 0.50% |
| Danish | 5,887 | 1.09%, see rank | 0.90% | 0.45% |
| Dutch | 10,185 | 1.89%, see rank | 1.91% | 1.51% |
| English | 70,123 | 13.02%, see rank | 11.19% | 8.53% |
| French | 23,532 | 4.37%, see rank | 3.75% | 3.54% |
| German | 140,086 | 26.00%, see rank | 22.06% | 15.79% |
| Greek | 2,228 | 0.41%, see rank | 0.40% | 0.42% |
| Hungarian | 2,432 | 0.45%, see rank | 0.42% | 0.48% |
| Irish | 81,181 | 15.07%, see rank | 12.52% | 11.36% |
| Italian | 36,067 | 6.70%, see rank | 5.22% | 5.66% |
| Norwegian | 14,304 | 2.66%, see rank | 2.26% | 1.46% |
| Polish | 16,984 | 3.15%, see rank | 2.55% | 3.13% |
| Portuguese | 886 | 0.16%, see rank | 0.20% | 0.46% |
| Russian | 6,174 | 1.15%, see rank | 1.15% | 0.97% |
| Scotch-Irish | 8,642 | 1.60%, see rank | 1.37% | 1.07% |
| Scottish | 16,924 | 3.14%, see rank | 2.69% | 1.81% |
| Subsaharan African | 1,004 | 0.19%, see rank | 0.64% | 0.93% |
| Swedish | 18,114 | 3.36%, see rank | 2.64% | 1.34% |
| Swiss | 2,960 | 0.55%, see rank | 0.48% | 0.31% |
| Ukrainian | 1,670 | 0.31%, see rank | 0.25% | 0.31% |
| American | 24,484 | 4.54%, see rank | 4.88% | 6.72% |
| Welsh | 4,922 | 0.91%, see rank | 0.93% | 0.60% |
ACS 2006-2010 data
485,712 (91.51%) out of the total population of 530,782 reported first ancestry.
| Jefferson County School District R-1 | % of the Total Population | Colorado | U.S. | |
| Arab | 1,755 | 0.33%, see rank | 0.33% | 0.50% |
| Czech | 4,717 | 0.89%, see rank | 0.78% | 0.53% |
| Danish | 6,267 | 1.18%, see rank | 0.95% | 0.48% |
| Dutch | 11,043 | 2.08%, see rank | 1.98% | 1.63% |
| English | 75,716 | 14.26%, see rank | 11.90% | 9.02% |
| French | 25,096 | 4.73%, see rank | 3.96% | 3.77% |
| German | 147,049 | 27.70%, see rank | 22.99% | 16.51% |
| Greek | 2,465 | 0.46%, see rank | 0.40% | 0.44% |
| Hungarian | 2,337 | 0.44%, see rank | 0.43% | 0.51% |
| Irish | 83,329 | 15.70%, see rank | 12.87% | 11.76% |
| Italian | 35,580 | 6.70%, see rank | 5.18% | 5.78% |
| Norwegian | 15,661 | 2.95%, see rank | 2.34% | 1.51% |
| Polish | 16,480 | 3.10%, see rank | 2.54% | 3.24% |
| Portuguese | 881 | 0.17%, see rank | 0.22% | 0.47% |
| Russian | 6,323 | 1.19%, see rank | 1.23% | 1.01% |
| Scotch-Irish | 13,437 | 2.53%, see rank | 2.21% | 1.72% |
| Scottish | 18,095 | 3.41%, see rank | 2.86% | 1.92% |
| Subsaharan African | 913 | 0.17%, see rank | 0.55% | 0.91% |
| Swedish | 19,115 | 3.60%, see rank | 2.81% | 1.41% |
| Swiss | 3,145 | 0.59%, see rank | 0.52% | 0.33% |
| Ukrainian | 1,690 | 0.32%, see rank | 0.27% | 0.31% |
| American | 21,173 | 3.99%, see rank | 4.46% | 6.28% |
| Welsh | 5,624 | 1.06%, see rank | 0.96% | 0.63% |
ACS 2005-2009 data
487,741 (91.86%) out of the total population of 530,965 reported first ancestry.
| Jefferson County School District R-1 | % of the Total Population | Colorado | U.S. | |
| Arab | 1,630 | 0.31%, see rank | 0.33% | 0.50% |
| Czech | 4,956 | 0.93%, see rank | 0.80% | 0.54% |
| Danish | 6,923 | 1.30%, see rank | 0.99% | 0.49% |
| Dutch | 11,100 | 2.09%, see rank | 2.06% | 1.68% |
| English | 78,968 | 14.87%, see rank | 12.26% | 9.29% |
| French | 26,019 | 4.90%, see rank | 4.07% | 3.90% |
| German | 148,088 | 27.89%, see rank | 23.49% | 16.89% |
| Greek | 2,403 | 0.45%, see rank | 0.42% | 0.45% |
| Hungarian | 2,484 | 0.47%, see rank | 0.45% | 0.52% |
| Irish | 82,875 | 15.61%, see rank | 13.00% | 12.01% |
| Italian | 36,614 | 6.90%, see rank | 5.20% | 5.91% |
| Norwegian | 16,082 | 3.03%, see rank | 2.40% | 1.55% |
| Polish | 15,868 | 2.99%, see rank | 2.56% | 3.32% |
| Portuguese | 1,042 | 0.20%, see rank | 0.22% | 0.48% |
| Russian | 6,141 | 1.16%, see rank | 1.28% | 1.04% |
| Scotch-Irish | 13,887 | 2.62%, see rank | 2.31% | 1.77% |
| Scottish | 18,523 | 3.49%, see rank | 2.90% | 1.97% |
| Subsaharan African | 1,205 | 0.23%, see rank | 0.55% | 0.88% |
| Swedish | 19,414 | 3.66%, see rank | 2.84% | 1.45% |
| Swiss | 3,040 | 0.57%, see rank | 0.50% | 0.34% |
| Ukrainian | 1,871 | 0.35%, see rank | 0.27% | 0.32% |
| American | 21,763 | 4.10%, see rank | 4.64% | 6.43% |
| Welsh | 5,599 | 1.05%, see rank | 0.99% | 0.65% |
* 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.