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Ontario, CA Historical First Ancestry Data
ACS 2010-2014 data
155,732 (93.31%) out of the total population of 166,892 reported first ancestry.
| Ontario, CA | % of the Total Population | California | U.S. | |
| Arab | 273 | 0.16%, see rank | 0.72% | 0.56% |
| Czech | 67 | 0.04%, see rank | 0.22% | 0.47% |
| Danish | 340 | 0.20%, see rank | 0.46% | 0.42% |
| Dutch | 1,646 | 0.99%, see rank | 0.99% | 1.40% |
| English | 4,966 | 2.98%, see rank | 5.94% | 8.02% |
| French | 1,855 | 1.11%, see rank | 2.15% | 3.34% |
| German | 6,512 | 3.90%, see rank | 8.51% | 15.03% |
| Greek | 195 | 0.12%, see rank | 0.35% | 0.41% |
| Hungarian | 299 | 0.18%, see rank | 0.32% | 0.46% |
| Irish | 4,839 | 2.90%, see rank | 6.69% | 10.80% |
| Italian | 2,803 | 1.68%, see rank | 3.97% | 5.52% |
| Norwegian | 872 | 0.52%, see rank | 1.02% | 1.42% |
| Polish | 1,032 | 0.62%, see rank | 1.32% | 3.01% |
| Portuguese | 800 | 0.48%, see rank | 0.91% | 0.44% |
| Russian | 334 | 0.20%, see rank | 1.13% | 0.92% |
| Scotch-Irish | 395 | 0.24%, see rank | 0.61% | 0.99% |
| Scottish | 1,050 | 0.63%, see rank | 1.34% | 1.72% |
| Subsaharan African | 857 | 0.51%, see rank | 0.69% | 0.95% |
| Swedish | 661 | 0.40%, see rank | 1.09% | 1.27% |
| Swiss | 121 | 0.07%, see rank | 0.27% | 0.30% |
| Ukrainian | 58 | 0.03%, see rank | 0.27% | 0.31% |
| American | 15,356 | 9.20%, see rank | 3.22% | 7.12% |
| Welsh | 230 | 0.14%, see rank | 0.43% | 0.57% |
ACS 2008-2012 data
156,050 (94.43%) out of the total population of 165,260 reported first ancestry.
| Ontario, CA | % of the Total Population | California | U.S. | |
| Arab | 400 | 0.24%, see rank | 0.70% | 0.53% |
| Czech | 92 | 0.06%, see rank | 0.24% | 0.50% |
| Danish | 419 | 0.25%, see rank | 0.50% | 0.45% |
| Dutch | 1,916 | 1.16%, see rank | 1.08% | 1.51% |
| English | 5,847 | 3.54%, see rank | 6.39% | 8.53% |
| French | 2,487 | 1.50%, see rank | 2.28% | 3.54% |
| German | 7,654 | 4.63%, see rank | 9.10% | 15.79% |
| Greek | 136 | 0.08%, see rank | 0.35% | 0.42% |
| Hungarian | 345 | 0.21%, see rank | 0.34% | 0.48% |
| Irish | 5,858 | 3.54%, see rank | 7.13% | 11.36% |
| Italian | 3,162 | 1.91%, see rank | 4.08% | 5.66% |
| Norwegian | 820 | 0.50%, see rank | 1.06% | 1.46% |
| Polish | 1,033 | 0.63%, see rank | 1.35% | 3.13% |
| Portuguese | 591 | 0.36%, see rank | 0.96% | 0.46% |
| Russian | 328 | 0.20%, see rank | 1.18% | 0.97% |
| Scotch-Irish | 597 | 0.36%, see rank | 0.67% | 1.07% |
| Scottish | 1,335 | 0.81%, see rank | 1.43% | 1.81% |
| Subsaharan African | 648 | 0.39%, see rank | 0.72% | 0.93% |
| Swedish | 931 | 0.56%, see rank | 1.16% | 1.34% |
| Swiss | 177 | 0.11%, see rank | 0.28% | 0.31% |
| Ukrainian | 126 | 0.08%, see rank | 0.26% | 0.31% |
| American | 5,605 | 3.39%, see rank | 2.78% | 6.72% |
| Welsh | 255 | 0.15%, see rank | 0.46% | 0.60% |
ACS 2006-2010 data
157,780 (95.50%) out of the total population of 165,215 reported first ancestry.
| Ontario, CA | % of the Total Population | California | U.S. | |
| Arab | 451 | 0.27%, see rank | 0.66% | 0.50% |
| Czech | 135 | 0.08%, see rank | 0.26% | 0.53% |
| Danish | 472 | 0.29%, see rank | 0.53% | 0.48% |
| Dutch | 1,980 | 1.20%, see rank | 1.15% | 1.63% |
| English | 5,887 | 3.56%, see rank | 6.77% | 9.02% |
| French | 2,629 | 1.59%, see rank | 2.44% | 3.77% |
| German | 8,453 | 5.12%, see rank | 9.60% | 16.51% |
| Greek | 137 | 0.08%, see rank | 0.38% | 0.44% |
| Hungarian | 554 | 0.34%, see rank | 0.36% | 0.51% |
| Irish | 6,161 | 3.73%, see rank | 7.50% | 11.76% |
| Italian | 4,032 | 2.44%, see rank | 4.21% | 5.78% |
| Norwegian | 1,328 | 0.80%, see rank | 1.10% | 1.51% |
| Polish | 1,301 | 0.79%, see rank | 1.41% | 3.24% |
| Portuguese | 597 | 0.36%, see rank | 1.02% | 0.47% |
| Russian | 328 | 0.20%, see rank | 1.22% | 1.01% |
| Scotch-Irish | 851 | 0.52%, see rank | 1.19% | 1.72% |
| Scottish | 1,583 | 0.96%, see rank | 1.54% | 1.92% |
| Subsaharan African | 906 | 0.55%, see rank | 0.72% | 0.91% |
| Swedish | 1,152 | 0.70%, see rank | 1.25% | 1.41% |
| Swiss | 170 | 0.10%, see rank | 0.31% | 0.33% |
| Ukrainian | 141 | 0.09%, see rank | 0.26% | 0.31% |
| American | 4,023 | 2.44%, see rank | 2.43% | 6.28% |
| Welsh | 349 | 0.21%, see rank | 0.49% | 0.63% |
ACS 2005-2009 data
163,685 (95.87%) out of the total population of 170,734 reported first ancestry.
| Ontario, CA | % of the Total Population | California | U.S. | |
| Arab | 444 | 0.26%, see rank | 0.66% | 0.50% |
| Czech | 169 | 0.10%, see rank | 0.27% | 0.54% |
| Danish | 433 | 0.25%, see rank | 0.55% | 0.49% |
| Dutch | 2,436 | 1.43%, see rank | 1.19% | 1.68% |
| English | 5,625 | 3.29%, see rank | 7.02% | 9.29% |
| French | 3,134 | 1.84%, see rank | 2.56% | 3.90% |
| German | 9,672 | 5.66%, see rank | 9.93% | 16.89% |
| Greek | 115 | 0.07%, see rank | 0.38% | 0.45% |
| Hungarian | 636 | 0.37%, see rank | 0.37% | 0.52% |
| Irish | 6,989 | 4.09%, see rank | 7.79% | 12.01% |
| Italian | 4,031 | 2.36%, see rank | 4.33% | 5.91% |
| Norwegian | 1,355 | 0.79%, see rank | 1.14% | 1.55% |
| Polish | 1,263 | 0.74%, see rank | 1.45% | 3.32% |
| Portuguese | 401 | 0.23%, see rank | 1.05% | 0.48% |
| Russian | 393 | 0.23%, see rank | 1.25% | 1.04% |
| Scotch-Irish | 1,043 | 0.61%, see rank | 1.23% | 1.77% |
| Scottish | 1,369 | 0.80%, see rank | 1.61% | 1.97% |
| Subsaharan African | 931 | 0.55%, see rank | 0.71% | 0.88% |
| Swedish | 1,109 | 0.65%, see rank | 1.28% | 1.45% |
| Swiss | 179 | 0.10%, see rank | 0.32% | 0.34% |
| Ukrainian | 178 | 0.10%, see rank | 0.27% | 0.32% |
| American | 4,830 | 2.83%, see rank | 2.66% | 6.43% |
| Welsh | 393 | 0.23%, see rank | 0.52% | 0.65% |
US Census 2000 data
135,190 (85.56%) out of the total population of 158,007 reported first ancestry.
| Ontario, CA | % of the Total Population | California | U.S. | |
| Arab | 262 | 0.17%, see rank | 0.50% | 0.36% |
| Czech | 83 | 0.05%, see rank | 0.14% | 0.27% |
| Danish | 218 | 0.14%, see rank | 0.38% | 0.30% |
| Dutch | 1,770 | 1.12%, see rank | 0.71% | 0.91% |
| English | 4,202 | 2.66%, see rank | 4.91% | 5.91% |
| French | 1,553 | 0.98%, see rank | 1.57% | 2.39% |
| German | 6,080 | 3.85%, see rank | 6.45% | 10.81% |
| Greek | 188 | 0.12%, see rank | 0.29% | 0.34% |
| Hungarian | 287 | 0.18%, see rank | 0.27% | 0.32% |
| Irish | 3,785 | 2.40%, see rank | 4.72% | 6.85% |
| Italian | 2,878 | 1.82%, see rank | 3.41% | 4.59% |
| Norwegian | 564 | 0.36%, see rank | 0.92% | 1.15% |
| Polish | 612 | 0.39%, see rank | 0.95% | 2.24% |
| Portuguese | 743 | 0.47%, see rank | 0.75% | 0.33% |
| Russian | 232 | 0.15%, see rank | 0.90% | 0.68% |
| Scotch-Irish | 772 | 0.49%, see rank | 0.87% | 1.17% |
| Scottish | 569 | 0.36%, see rank | 1.00% | 1.12% |
| Subsaharan African | 750 | 0.47%, see rank | 0.51% | 0.61% |
| Swedish | 729 | 0.46%, see rank | 0.86% | 0.87% |
| Swiss | 142 | 0.09%, see rank | 0.21% | 0.19% |
| Ukrainian | 40 | 0.03%, see rank | 0.20% | 0.24% |
| American | 4,501 | 2.85%, see rank | 3.37% | 7.33% |
| Welsh | 196 | 0.12%, see rank | 0.27% | 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.