Jefferson County Historical First Ancestry Data
ACS 2010-2014 data
614,177 (81.73%) out of the total population of 751,485 reported first ancestry.
| Jefferson County | % of the Total Population | Kentucky | U.S. | |
| Arab | 4,873 | 0.65%, see rank | 0.29% | 0.56% |
| Czech | 1,098 | 0.15%, see rank | 0.11% | 0.47% |
| Danish | 743 | 0.10%, see rank | 0.10% | 0.42% |
| Dutch | 8,372 | 1.11%, see rank | 1.13% | 1.40% |
| English | 70,175 | 9.34%, see rank | 10.29% | 8.02% |
| French | 16,439 | 2.19%, see rank | 1.82% | 3.34% |
| German | 130,079 | 17.31%, see rank | 14.75% | 15.03% |
| Greek | 1,371 | 0.18%, see rank | 0.15% | 0.41% |
| Hungarian | 1,412 | 0.19%, see rank | 0.17% | 0.46% |
| Irish | 95,808 | 12.75%, see rank | 12.51% | 10.80% |
| Italian | 18,696 | 2.49%, see rank | 1.99% | 5.52% |
| Norwegian | 2,643 | 0.35%, see rank | 0.32% | 1.42% |
| Polish | 7,121 | 0.95%, see rank | 0.83% | 3.01% |
| Portuguese | 769 | 0.10%, see rank | 0.08% | 0.44% |
| Russian | 3,225 | 0.43%, see rank | 0.21% | 0.92% |
| Scotch-Irish | 8,554 | 1.14%, see rank | 1.37% | 0.99% |
| Scottish | 13,256 | 1.76%, see rank | 1.88% | 1.72% |
| Subsaharan African | 19,450 | 2.59%, see rank | 0.85% | 0.95% |
| Swedish | 2,956 | 0.39%, see rank | 0.37% | 1.27% |
| Swiss | 2,746 | 0.37%, see rank | 0.24% | 0.30% |
| Ukrainian | 774 | 0.10%, see rank | 0.08% | 0.31% |
| American | 105,553 | 14.05%, see rank | 20.66% | 7.12% |
| Welsh | 4,095 | 0.54%, see rank | 0.52% | 0.57% |
ACS 2008-2012 data
625,225 (84.34%) out of the total population of 741,285 reported first ancestry.
| Jefferson County | % of the Total Population | Kentucky | U.S. | |
| Arab | 4,317 | 0.58%, see rank | 0.25% | 0.53% |
| Czech | 1,300 | 0.18%, see rank | 0.12% | 0.50% |
| Danish | 796 | 0.11%, see rank | 0.10% | 0.45% |
| Dutch | 9,459 | 1.28%, see rank | 1.21% | 1.51% |
| English | 70,580 | 9.52%, see rank | 10.97% | 8.53% |
| French | 17,764 | 2.40%, see rank | 1.95% | 3.54% |
| German | 137,246 | 18.51%, see rank | 15.19% | 15.79% |
| Greek | 1,591 | 0.21%, see rank | 0.15% | 0.42% |
| Hungarian | 1,534 | 0.21%, see rank | 0.16% | 0.48% |
| Irish | 99,446 | 13.42%, see rank | 13.16% | 11.36% |
| Italian | 18,882 | 2.55%, see rank | 2.05% | 5.66% |
| Norwegian | 2,379 | 0.32%, see rank | 0.30% | 1.46% |
| Polish | 7,712 | 1.04%, see rank | 0.87% | 3.13% |
| Portuguese | 629 | 0.08%, see rank | 0.07% | 0.46% |
| Russian | 3,306 | 0.45%, see rank | 0.20% | 0.97% |
| Scotch-Irish | 9,875 | 1.33%, see rank | 1.46% | 1.07% |
| Scottish | 12,584 | 1.70%, see rank | 1.89% | 1.81% |
| Subsaharan African | 22,774 | 3.07%, see rank | 0.83% | 0.93% |
| Swedish | 3,240 | 0.44%, see rank | 0.38% | 1.34% |
| Swiss | 2,990 | 0.40%, see rank | 0.23% | 0.31% |
| Ukrainian | 710 | 0.10%, see rank | 0.08% | 0.31% |
| American | 95,622 | 12.90%, see rank | 20.61% | 6.72% |
| Welsh | 4,060 | 0.55%, see rank | 0.52% | 0.60% |
ACS 2006-2010 data
611,750 (83.86%) out of the total population of 729,452 reported first ancestry.
| Jefferson County | % of the Total Population | Kentucky | U.S. | |
| Arab | 3,217 | 0.44%, see rank | 0.22% | 0.50% |
| Czech | 1,285 | 0.18%, see rank | 0.12% | 0.53% |
| Danish | 850 | 0.12%, see rank | 0.11% | 0.48% |
| Dutch | 10,514 | 1.44%, see rank | 1.37% | 1.63% |
| English | 74,901 | 10.27%, see rank | 11.53% | 9.02% |
| French | 17,781 | 2.44%, see rank | 2.06% | 3.77% |
| German | 145,815 | 19.99%, see rank | 15.98% | 16.51% |
| Greek | 1,328 | 0.18%, see rank | 0.16% | 0.44% |
| Hungarian | 1,820 | 0.25%, see rank | 0.16% | 0.51% |
| Irish | 103,555 | 14.20%, see rank | 13.68% | 11.76% |
| Italian | 19,830 | 2.72%, see rank | 2.07% | 5.78% |
| Norwegian | 1,965 | 0.27%, see rank | 0.32% | 1.51% |
| Polish | 8,193 | 1.12%, see rank | 0.95% | 3.24% |
| Portuguese | 615 | 0.08%, see rank | 0.07% | 0.47% |
| Russian | 3,890 | 0.53%, see rank | 0.24% | 1.01% |
| Scotch-Irish | 13,841 | 1.90%, see rank | 2.10% | 1.72% |
| Scottish | 13,277 | 1.82%, see rank | 2.00% | 1.92% |
| Subsaharan African | 13,883 | 1.90%, see rank | 0.54% | 0.91% |
| Swedish | 3,755 | 0.51%, see rank | 0.42% | 1.41% |
| Swiss | 3,616 | 0.50%, see rank | 0.25% | 0.33% |
| Ukrainian | 742 | 0.10%, see rank | 0.09% | 0.31% |
| American | 78,422 | 10.75%, see rank | 19.75% | 6.28% |
| Welsh | 3,979 | 0.55%, see rank | 0.53% | 0.63% |
ACS 2005-2009 data
599,468 (84.28%) out of the total population of 711,317 reported first ancestry.
| Jefferson County | % of the Total Population | Kentucky | U.S. | |
| Arab | 3,033 | 0.43%, see rank | 0.21% | 0.50% |
| Czech | 1,124 | 0.16%, see rank | 0.11% | 0.54% |
| Danish | 781 | 0.11%, see rank | 0.11% | 0.49% |
| Dutch | 11,068 | 1.56%, see rank | 1.44% | 1.68% |
| English | 76,729 | 10.79%, see rank | 11.69% | 9.29% |
| French | 18,560 | 2.61%, see rank | 2.15% | 3.90% |
| German | 148,055 | 20.81%, see rank | 16.15% | 16.89% |
| Greek | 1,150 | 0.16%, see rank | 0.16% | 0.45% |
| Hungarian | 1,708 | 0.24%, see rank | 0.17% | 0.52% |
| Irish | 103,799 | 14.59%, see rank | 13.83% | 12.01% |
| Italian | 20,230 | 2.84%, see rank | 2.09% | 5.91% |
| Norwegian | 1,831 | 0.26%, see rank | 0.32% | 1.55% |
| Polish | 8,840 | 1.24%, see rank | 0.96% | 3.32% |
| Portuguese | 548 | 0.08%, see rank | 0.06% | 0.48% |
| Russian | 3,887 | 0.55%, see rank | 0.25% | 1.04% |
| Scotch-Irish | 14,142 | 1.99%, see rank | 2.10% | 1.77% |
| Scottish | 13,398 | 1.88%, see rank | 2.04% | 1.97% |
| Subsaharan African | 11,326 | 1.59%, see rank | 0.48% | 0.88% |
| Swedish | 4,098 | 0.58%, see rank | 0.45% | 1.45% |
| Swiss | 3,801 | 0.53%, see rank | 0.26% | 0.34% |
| Ukrainian | 801 | 0.11%, see rank | 0.09% | 0.32% |
| American | 74,792 | 10.51%, see rank | 19.92% | 6.43% |
| Welsh | 4,494 | 0.63%, see rank | 0.54% | 0.65% |
US Census 2000 data
519,374 (74.88%) out of the total population of 693,604 reported first ancestry.
| Jefferson County | % of the Total Population | Kentucky | U.S. | |
| Arab | 2,638 | 0.38%, see rank | 0.15% | 0.36% |
| Czech | 465 | 0.07%, see rank | 0.04% | 0.27% |
| Danish | 486 | 0.07%, see rank | 0.06% | 0.30% |
| Dutch | 5,380 | 0.78%, see rank | 0.68% | 0.91% |
| English | 49,723 | 7.17%, see rank | 7.62% | 5.91% |
| French | 9,534 | 1.37%, see rank | 1.16% | 2.39% |
| German | 94,817 | 13.67%, see rank | 9.56% | 10.81% |
| Greek | 789 | 0.11%, see rank | 0.09% | 0.34% |
| Hungarian | 979 | 0.14%, see rank | 0.11% | 0.32% |
| Irish | 58,339 | 8.41%, see rank | 7.08% | 6.85% |
| Italian | 11,716 | 1.69%, see rank | 1.19% | 4.59% |
| Norwegian | 1,513 | 0.22%, see rank | 0.20% | 1.15% |
| Polish | 4,969 | 0.72%, see rank | 0.49% | 2.24% |
| Portuguese | 462 | 0.07%, see rank | 0.03% | 0.33% |
| Russian | 2,469 | 0.36%, see rank | 0.13% | 0.68% |
| Scotch-Irish | 9,347 | 1.35%, see rank | 1.34% | 1.17% |
| Scottish | 8,257 | 1.19%, see rank | 1.05% | 1.12% |
| Subsaharan African | 4,077 | 0.59%, see rank | 0.30% | 0.61% |
| Swedish | 2,166 | 0.31%, see rank | 0.22% | 0.87% |
| Swiss | 1,788 | 0.26%, see rank | 0.15% | 0.19% |
| Ukrainian | 600 | 0.09%, see rank | 0.05% | 0.24% |
| American | 78,893 | 11.37%, see rank | 20.93% | 7.33% |
| Welsh | 1,957 | 0.28%, see rank | 0.26% | 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.