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River Delta Joint Unified School District Historical First Ancestry Data
ACS 2010-2014 data
13,688 (90.91%) out of the total population of 15,056 reported first ancestry.
| River Delta Joint Unified School District | % of the Total Population | California | U.S. | |
| Arab | 12 | 0.08%, see rank | 0.72% | 0.56% |
| Czech | 52 | 0.35%, see rank | 0.22% | 0.47% |
| Danish | 105 | 0.70%, see rank | 0.46% | 0.42% |
| Dutch | 297 | 1.97%, see rank | 0.99% | 1.40% |
| English | 1,352 | 8.98%, see rank | 5.94% | 8.02% |
| French | 568 | 3.77%, see rank | 2.15% | 3.34% |
| German | 2,126 | 14.12%, see rank | 8.51% | 15.03% |
| Greek | 87 | 0.58%, see rank | 0.35% | 0.41% |
| Hungarian | 43 | 0.29%, see rank | 0.32% | 0.46% |
| Irish | 1,853 | 12.31%, see rank | 6.69% | 10.80% |
| Italian | 897 | 5.96%, see rank | 3.97% | 5.52% |
| Norwegian | 194 | 1.29%, see rank | 1.02% | 1.42% |
| Polish | 163 | 1.08%, see rank | 1.32% | 3.01% |
| Portuguese | 487 | 3.23%, see rank | 0.91% | 0.44% |
| Russian | 175 | 1.16%, see rank | 1.13% | 0.92% |
| Scotch-Irish | 114 | 0.76%, see rank | 0.61% | 0.99% |
| Scottish | 313 | 2.08%, see rank | 1.34% | 1.72% |
| Subsaharan African | 15 | 0.10%, see rank | 0.69% | 0.95% |
| Swedish | 346 | 2.30%, see rank | 1.09% | 1.27% |
| Swiss | 76 | 0.50%, see rank | 0.27% | 0.30% |
| Ukrainian | 15 | 0.10%, see rank | 0.27% | 0.31% |
| American | 555 | 3.69%, see rank | 3.22% | 7.12% |
| Welsh | 84 | 0.56%, see rank | 0.43% | 0.57% |
ACS 2008-2012 data
13,668 (95.30%) out of the total population of 14,342 reported first ancestry.
| River Delta Joint Unified School District | % of the Total Population | California | U.S. | |
| Arab | 21 | 0.15%, see rank | 0.70% | 0.53% |
| Czech | 42 | 0.29%, see rank | 0.24% | 0.50% |
| Danish | 103 | 0.72%, see rank | 0.50% | 0.45% |
| Dutch | 248 | 1.73%, see rank | 1.08% | 1.51% |
| English | 1,656 | 11.55%, see rank | 6.39% | 8.53% |
| French | 613 | 4.27%, see rank | 2.28% | 3.54% |
| German | 2,338 | 16.30%, see rank | 9.10% | 15.79% |
| Greek | 89 | 0.62%, see rank | 0.35% | 0.42% |
| Hungarian | 52 | 0.36%, see rank | 0.34% | 0.48% |
| Irish | 2,119 | 14.77%, see rank | 7.13% | 11.36% |
| Italian | 962 | 6.71%, see rank | 4.08% | 5.66% |
| Norwegian | 247 | 1.72%, see rank | 1.06% | 1.46% |
| Polish | 106 | 0.74%, see rank | 1.35% | 3.13% |
| Portuguese | 553 | 3.86%, see rank | 0.96% | 0.46% |
| Russian | 94 | 0.66%, see rank | 1.18% | 0.97% |
| Scotch-Irish | 186 | 1.30%, see rank | 0.67% | 1.07% |
| Scottish | 398 | 2.78%, see rank | 1.43% | 1.81% |
| Subsaharan African | 0 | 0.00%, see rank | 0.72% | 0.93% |
| Swedish | 327 | 2.28%, see rank | 1.16% | 1.34% |
| Swiss | 123 | 0.86%, see rank | 0.28% | 0.31% |
| Ukrainian | 32 | 0.22%, see rank | 0.26% | 0.31% |
| American | 548 | 3.82%, see rank | 2.78% | 6.72% |
| Welsh | 141 | 0.98%, see rank | 0.46% | 0.60% |
ACS 2006-2010 data
12,716 (94.22%) out of the total population of 13,496 reported first ancestry.
| River Delta Joint Unified School District | % of the Total Population | California | U.S. | |
| Arab | 27 | 0.20%, see rank | 0.66% | 0.50% |
| Czech | 30 | 0.22%, see rank | 0.26% | 0.53% |
| Danish | 124 | 0.92%, see rank | 0.53% | 0.48% |
| Dutch | 229 | 1.70%, see rank | 1.15% | 1.63% |
| English | 1,451 | 10.75%, see rank | 6.77% | 9.02% |
| French | 385 | 2.85%, see rank | 2.44% | 3.77% |
| German | 2,377 | 17.61%, see rank | 9.60% | 16.51% |
| Greek | 91 | 0.67%, see rank | 0.38% | 0.44% |
| Hungarian | 34 | 0.25%, see rank | 0.36% | 0.51% |
| Irish | 1,864 | 13.81%, see rank | 7.50% | 11.76% |
| Italian | 738 | 5.47%, see rank | 4.21% | 5.78% |
| Norwegian | 205 | 1.52%, see rank | 1.10% | 1.51% |
| Polish | 130 | 0.96%, see rank | 1.41% | 3.24% |
| Portuguese | 461 | 3.42%, see rank | 1.02% | 0.47% |
| Russian | 127 | 0.94%, see rank | 1.22% | 1.01% |
| Scotch-Irish | 240 | 1.78%, see rank | 1.19% | 1.72% |
| Scottish | 297 | 2.20%, see rank | 1.54% | 1.92% |
| Subsaharan African | 16 | 0.12%, see rank | 0.72% | 0.91% |
| Swedish | 258 | 1.91%, see rank | 1.25% | 1.41% |
| Swiss | 83 | 0.61%, see rank | 0.31% | 0.33% |
| Ukrainian | 23 | 0.17%, see rank | 0.26% | 0.31% |
| American | 562 | 4.16%, see rank | 2.43% | 6.28% |
| Welsh | 64 | 0.47%, see rank | 0.49% | 0.63% |
ACS 2005-2009 data
13,633 (94.53%) out of the total population of 14,422 reported first ancestry.
| River Delta Joint Unified School District | % of the Total Population | California | U.S. | |
| Arab | 14 | 0.10%, see rank | 0.66% | 0.50% |
| Czech | 27 | 0.19%, see rank | 0.27% | 0.54% |
| Danish | 142 | 0.98%, see rank | 0.55% | 0.49% |
| Dutch | 259 | 1.80%, see rank | 1.19% | 1.68% |
| English | 1,612 | 11.18%, see rank | 7.02% | 9.29% |
| French | 477 | 3.31%, see rank | 2.56% | 3.90% |
| German | 2,841 | 19.70%, see rank | 9.93% | 16.89% |
| Greek | 35 | 0.24%, see rank | 0.38% | 0.45% |
| Hungarian | 16 | 0.11%, see rank | 0.37% | 0.52% |
| Irish | 1,794 | 12.44%, see rank | 7.79% | 12.01% |
| Italian | 640 | 4.44%, see rank | 4.33% | 5.91% |
| Norwegian | 271 | 1.88%, see rank | 1.14% | 1.55% |
| Polish | 112 | 0.78%, see rank | 1.45% | 3.32% |
| Portuguese | 719 | 4.99%, see rank | 1.05% | 0.48% |
| Russian | 75 | 0.52%, see rank | 1.25% | 1.04% |
| Scotch-Irish | 329 | 2.28%, see rank | 1.23% | 1.77% |
| Scottish | 432 | 3.00%, see rank | 1.61% | 1.97% |
| Subsaharan African | 47 | 0.33%, see rank | 0.71% | 0.88% |
| Swedish | 175 | 1.21%, see rank | 1.28% | 1.45% |
| Swiss | 125 | 0.87%, see rank | 0.32% | 0.34% |
| Ukrainian | 13 | 0.09%, see rank | 0.27% | 0.32% |
| American | 579 | 4.01%, see rank | 2.66% | 6.43% |
| Welsh | 63 | 0.44%, see rank | 0.52% | 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.