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Naperville Community Unit District 203 Historical First Ancestry Data
ACS 2010-2014 data
87,605 (90.88%) out of the total population of 96,394 reported first ancestry.
| Naperville Community Unit District 203 | % of the Total Population | Illinois | U.S. | |
| Arab | 595 | 0.62%, see rank | 0.71% | 0.56% |
| Czech | 2,480 | 2.57%, see rank | 0.92% | 0.47% |
| Danish | 485 | 0.50%, see rank | 0.38% | 0.42% |
| Dutch | 1,639 | 1.70%, see rank | 1.37% | 1.40% |
| English | 7,332 | 7.61%, see rank | 5.90% | 8.02% |
| French | 2,783 | 2.89%, see rank | 2.13% | 3.34% |
| German | 22,439 | 23.28%, see rank | 19.07% | 15.03% |
| Greek | 950 | 0.99%, see rank | 0.76% | 0.41% |
| Hungarian | 615 | 0.64%, see rank | 0.40% | 0.46% |
| Irish | 16,140 | 16.74%, see rank | 12.00% | 10.80% |
| Italian | 9,617 | 9.98%, see rank | 6.14% | 5.52% |
| Norwegian | 2,106 | 2.18%, see rank | 1.25% | 1.42% |
| Polish | 9,018 | 9.36%, see rank | 7.22% | 3.01% |
| Portuguese | 101 | 0.10%, see rank | 0.08% | 0.44% |
| Russian | 1,057 | 1.10%, see rank | 0.97% | 0.92% |
| Scotch-Irish | 610 | 0.63%, see rank | 0.59% | 0.99% |
| Scottish | 1,650 | 1.71%, see rank | 1.16% | 1.72% |
| Subsaharan African | 451 | 0.47%, see rank | 0.64% | 0.95% |
| Swedish | 3,154 | 3.27%, see rank | 2.13% | 1.27% |
| Swiss | 296 | 0.31%, see rank | 0.27% | 0.30% |
| Ukrainian | 328 | 0.34%, see rank | 0.40% | 0.31% |
| American | 3,218 | 3.34%, see rank | 5.00% | 7.12% |
| Welsh | 394 | 0.41%, see rank | 0.37% | 0.57% |
ACS 2008-2012 data
88,718 (93.23%) out of the total population of 95,161 reported first ancestry.
| Naperville Community Unit District 203 | % of the Total Population | Illinois | U.S. | |
| Arab | 740 | 0.78%, see rank | 0.64% | 0.53% |
| Czech | 2,867 | 3.01%, see rank | 0.96% | 0.50% |
| Danish | 552 | 0.58%, see rank | 0.40% | 0.45% |
| Dutch | 1,534 | 1.61%, see rank | 1.46% | 1.51% |
| English | 7,438 | 7.82%, see rank | 6.23% | 8.53% |
| French | 2,787 | 2.93%, see rank | 2.26% | 3.54% |
| German | 22,633 | 23.78%, see rank | 19.89% | 15.79% |
| Greek | 1,140 | 1.20%, see rank | 0.78% | 0.42% |
| Hungarian | 549 | 0.58%, see rank | 0.41% | 0.48% |
| Irish | 17,331 | 18.21%, see rank | 12.52% | 11.36% |
| Italian | 9,465 | 9.95%, see rank | 6.29% | 5.66% |
| Norwegian | 1,804 | 1.90%, see rank | 1.30% | 1.46% |
| Polish | 9,300 | 9.77%, see rank | 7.47% | 3.13% |
| Portuguese | 146 | 0.15%, see rank | 0.08% | 0.46% |
| Russian | 1,302 | 1.37%, see rank | 1.03% | 0.97% |
| Scotch-Irish | 761 | 0.80%, see rank | 0.65% | 1.07% |
| Scottish | 1,772 | 1.86%, see rank | 1.20% | 1.81% |
| Subsaharan African | 468 | 0.49%, see rank | 0.62% | 0.93% |
| Swedish | 3,624 | 3.81%, see rank | 2.24% | 1.34% |
| Swiss | 289 | 0.30%, see rank | 0.29% | 0.31% |
| Ukrainian | 367 | 0.39%, see rank | 0.40% | 0.31% |
| American | 2,668 | 2.80%, see rank | 4.85% | 6.72% |
| Welsh | 382 | 0.40%, see rank | 0.40% | 0.60% |
ACS 2006-2010 data
88,094 (93.22%) out of the total population of 94,500 reported first ancestry.
| Naperville Community Unit District 203 | % of the Total Population | Illinois | U.S. | |
| Arab | 833 | 0.88%, see rank | 0.55% | 0.50% |
| Czech | 2,724 | 2.88%, see rank | 1.01% | 0.53% |
| Danish | 729 | 0.77%, see rank | 0.42% | 0.48% |
| Dutch | 1,457 | 1.54%, see rank | 1.58% | 1.63% |
| English | 8,367 | 8.85%, see rank | 6.56% | 9.02% |
| French | 2,583 | 2.73%, see rank | 2.43% | 3.77% |
| German | 23,063 | 24.41%, see rank | 20.72% | 16.51% |
| Greek | 1,033 | 1.09%, see rank | 0.83% | 0.44% |
| Hungarian | 632 | 0.67%, see rank | 0.43% | 0.51% |
| Irish | 17,896 | 18.94%, see rank | 12.94% | 11.76% |
| Italian | 9,610 | 10.17%, see rank | 6.35% | 5.78% |
| Norwegian | 1,674 | 1.77%, see rank | 1.36% | 1.51% |
| Polish | 10,531 | 11.14%, see rank | 7.69% | 3.24% |
| Portuguese | 125 | 0.13%, see rank | 0.08% | 0.47% |
| Russian | 1,377 | 1.46%, see rank | 1.07% | 1.01% |
| Scotch-Irish | 1,380 | 1.46%, see rank | 1.12% | 1.72% |
| Scottish | 2,053 | 2.17%, see rank | 1.26% | 1.92% |
| Subsaharan African | 349 | 0.37%, see rank | 0.63% | 0.91% |
| Swedish | 3,296 | 3.49%, see rank | 2.37% | 1.41% |
| Swiss | 506 | 0.54%, see rank | 0.33% | 0.33% |
| Ukrainian | 577 | 0.61%, see rank | 0.40% | 0.31% |
| American | 1,924 | 2.04%, see rank | 4.61% | 6.28% |
| Welsh | 587 | 0.62%, see rank | 0.41% | 0.63% |
ACS 2005-2009 data
94,219 (92.33%) out of the total population of 102,048 reported first ancestry.
| Naperville Community Unit District 203 | % of the Total Population | Illinois | U.S. | |
| Arab | 858 | 0.84%, see rank | 0.52% | 0.50% |
| Czech | 3,322 | 3.26%, see rank | 1.02% | 0.54% |
| Danish | 851 | 0.83%, see rank | 0.44% | 0.49% |
| Dutch | 1,846 | 1.81%, see rank | 1.61% | 1.68% |
| English | 9,149 | 8.97%, see rank | 6.71% | 9.29% |
| French | 2,909 | 2.85%, see rank | 2.51% | 3.90% |
| German | 25,431 | 24.92%, see rank | 21.16% | 16.89% |
| Greek | 1,209 | 1.18%, see rank | 0.85% | 0.45% |
| Hungarian | 570 | 0.56%, see rank | 0.45% | 0.52% |
| Irish | 19,508 | 19.12%, see rank | 13.14% | 12.01% |
| Italian | 10,244 | 10.04%, see rank | 6.45% | 5.91% |
| Norwegian | 1,758 | 1.72%, see rank | 1.38% | 1.55% |
| Polish | 11,767 | 11.53%, see rank | 7.85% | 3.32% |
| Portuguese | 97 | 0.10%, see rank | 0.07% | 0.48% |
| Russian | 1,446 | 1.42%, see rank | 1.11% | 1.04% |
| Scotch-Irish | 1,535 | 1.50%, see rank | 1.15% | 1.77% |
| Scottish | 2,090 | 2.05%, see rank | 1.31% | 1.97% |
| Subsaharan African | 302 | 0.30%, see rank | 0.62% | 0.88% |
| Swedish | 3,627 | 3.55%, see rank | 2.46% | 1.45% |
| Swiss | 602 | 0.59%, see rank | 0.33% | 0.34% |
| Ukrainian | 614 | 0.60%, see rank | 0.40% | 0.32% |
| American | 2,388 | 2.34%, see rank | 4.55% | 6.43% |
| Welsh | 693 | 0.68%, see rank | 0.42% | 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.