Fairfax County Historical First Ancestry Data
ACS 2010-2014 data
1,024,741 (91.73%) out of the total population of 1,117,072 reported first ancestry.
| Fairfax County | % of the Total Population | Virginia | U.S. | |
| Arab | 26,288 | 2.35%, see rank | 0.83% | 0.56% |
| Czech | 4,358 | 0.39%, see rank | 0.28% | 0.47% |
| Danish | 3,642 | 0.33%, see rank | 0.23% | 0.42% |
| Dutch | 10,684 | 0.96%, see rank | 1.00% | 1.40% |
| English | 98,490 | 8.82%, see rank | 10.69% | 8.02% |
| French | 28,684 | 2.57%, see rank | 2.33% | 3.34% |
| German | 128,961 | 11.54%, see rank | 11.87% | 15.03% |
| Greek | 7,385 | 0.66%, see rank | 0.41% | 0.41% |
| Hungarian | 5,760 | 0.52%, see rank | 0.35% | 0.46% |
| Irish | 115,617 | 10.35%, see rank | 9.99% | 10.80% |
| Italian | 56,583 | 5.07%, see rank | 4.00% | 5.52% |
| Norwegian | 10,170 | 0.91%, see rank | 0.61% | 1.42% |
| Polish | 29,692 | 2.66%, see rank | 1.89% | 3.01% |
| Portuguese | 2,861 | 0.26%, see rank | 0.20% | 0.44% |
| Russian | 15,794 | 1.41%, see rank | 0.70% | 0.92% |
| Scotch-Irish | 14,932 | 1.34%, see rank | 1.68% | 0.99% |
| Scottish | 25,214 | 2.26%, see rank | 2.13% | 1.72% |
| Subsaharan African | 34,595 | 3.10%, see rank | 2.02% | 0.95% |
| Swedish | 9,719 | 0.87%, see rank | 0.71% | 1.27% |
| Swiss | 3,640 | 0.33%, see rank | 0.24% | 0.30% |
| Ukrainian | 4,512 | 0.40%, see rank | 0.23% | 0.31% |
| American | 53,965 | 4.83%, see rank | 11.04% | 7.12% |
| Welsh | 7,811 | 0.70%, see rank | 0.65% | 0.57% |
ACS 2008-2012 data
1,011,160 (93.30%) out of the total population of 1,083,770 reported first ancestry.
| Fairfax County | % of the Total Population | Virginia | U.S. | |
| Arab | 23,218 | 2.14%, see rank | 0.75% | 0.53% |
| Czech | 4,600 | 0.42%, see rank | 0.29% | 0.50% |
| Danish | 3,895 | 0.36%, see rank | 0.24% | 0.45% |
| Dutch | 10,519 | 0.97%, see rank | 1.05% | 1.51% |
| English | 105,765 | 9.76%, see rank | 11.31% | 8.53% |
| French | 29,161 | 2.69%, see rank | 2.44% | 3.54% |
| German | 132,611 | 12.24%, see rank | 12.33% | 15.79% |
| Greek | 7,317 | 0.68%, see rank | 0.44% | 0.42% |
| Hungarian | 6,343 | 0.59%, see rank | 0.36% | 0.48% |
| Irish | 117,286 | 10.82%, see rank | 10.45% | 11.36% |
| Italian | 56,191 | 5.18%, see rank | 4.05% | 5.66% |
| Norwegian | 10,075 | 0.93%, see rank | 0.62% | 1.46% |
| Polish | 29,386 | 2.71%, see rank | 1.95% | 3.13% |
| Portuguese | 2,670 | 0.25%, see rank | 0.20% | 0.46% |
| Russian | 14,901 | 1.37%, see rank | 0.70% | 0.97% |
| Scotch-Irish | 15,202 | 1.40%, see rank | 1.78% | 1.07% |
| Scottish | 26,503 | 2.45%, see rank | 2.30% | 1.81% |
| Subsaharan African | 34,193 | 3.16%, see rank | 2.05% | 0.93% |
| Swedish | 10,027 | 0.93%, see rank | 0.74% | 1.34% |
| Swiss | 3,752 | 0.35%, see rank | 0.26% | 0.31% |
| Ukrainian | 4,623 | 0.43%, see rank | 0.24% | 0.31% |
| American | 46,620 | 4.30%, see rank | 11.02% | 6.72% |
| Welsh | 7,910 | 0.73%, see rank | 0.70% | 0.60% |
ACS 2006-2010 data
978,922 (93.36%) out of the total population of 1,048,554 reported first ancestry.
| Fairfax County | % of the Total Population | Virginia | U.S. | |
| Arab | 19,419 | 1.85%, see rank | 0.65% | 0.50% |
| Czech | 5,033 | 0.48%, see rank | 0.32% | 0.53% |
| Danish | 4,169 | 0.40%, see rank | 0.25% | 0.48% |
| Dutch | 12,183 | 1.16%, see rank | 1.16% | 1.63% |
| English | 111,935 | 10.68%, see rank | 11.75% | 9.02% |
| French | 29,272 | 2.79%, see rank | 2.54% | 3.77% |
| German | 138,060 | 13.17%, see rank | 12.95% | 16.51% |
| Greek | 7,647 | 0.73%, see rank | 0.44% | 0.44% |
| Hungarian | 6,255 | 0.60%, see rank | 0.38% | 0.51% |
| Irish | 121,596 | 11.60%, see rank | 10.78% | 11.76% |
| Italian | 56,230 | 5.36%, see rank | 4.05% | 5.78% |
| Norwegian | 10,411 | 0.99%, see rank | 0.65% | 1.51% |
| Polish | 29,504 | 2.81%, see rank | 1.98% | 3.24% |
| Portuguese | 2,298 | 0.22%, see rank | 0.19% | 0.47% |
| Russian | 14,682 | 1.40%, see rank | 0.70% | 1.01% |
| Scotch-Irish | 23,149 | 2.21%, see rank | 2.57% | 1.72% |
| Scottish | 27,263 | 2.60%, see rank | 2.41% | 1.92% |
| Subsaharan African | 31,568 | 3.01%, see rank | 2.00% | 0.91% |
| Swedish | 9,705 | 0.93%, see rank | 0.77% | 1.41% |
| Swiss | 4,218 | 0.40%, see rank | 0.27% | 0.33% |
| Ukrainian | 4,475 | 0.43%, see rank | 0.24% | 0.31% |
| American | 36,835 | 3.51%, see rank | 10.65% | 6.28% |
| Welsh | 8,194 | 0.78%, see rank | 0.74% | 0.63% |
ACS 2005-2009 data
945,178 (93.33%) out of the total population of 1,012,751 reported first ancestry.
| Fairfax County | % of the Total Population | Virginia | U.S. | |
| Arab | 18,930 | 1.87%, see rank | 0.66% | 0.50% |
| Czech | 4,967 | 0.49%, see rank | 0.31% | 0.54% |
| Danish | 4,465 | 0.44%, see rank | 0.27% | 0.49% |
| Dutch | 12,585 | 1.24%, see rank | 1.24% | 1.68% |
| English | 116,162 | 11.47%, see rank | 12.05% | 9.29% |
| French | 28,890 | 2.85%, see rank | 2.64% | 3.90% |
| German | 136,517 | 13.48%, see rank | 13.25% | 16.89% |
| Greek | 7,190 | 0.71%, see rank | 0.44% | 0.45% |
| Hungarian | 6,259 | 0.62%, see rank | 0.38% | 0.52% |
| Irish | 122,593 | 12.10%, see rank | 11.09% | 12.01% |
| Italian | 56,779 | 5.61%, see rank | 4.17% | 5.91% |
| Norwegian | 10,267 | 1.01%, see rank | 0.66% | 1.55% |
| Polish | 30,242 | 2.99%, see rank | 2.01% | 3.32% |
| Portuguese | 2,169 | 0.21%, see rank | 0.20% | 0.48% |
| Russian | 14,293 | 1.41%, see rank | 0.71% | 1.04% |
| Scotch-Irish | 23,492 | 2.32%, see rank | 2.67% | 1.77% |
| Scottish | 27,880 | 2.75%, see rank | 2.52% | 1.97% |
| Subsaharan African | 28,330 | 2.80%, see rank | 1.88% | 0.88% |
| Swedish | 9,997 | 0.99%, see rank | 0.78% | 1.45% |
| Swiss | 3,763 | 0.37%, see rank | 0.27% | 0.34% |
| Ukrainian | 4,515 | 0.45%, see rank | 0.25% | 0.32% |
| American | 36,938 | 3.65%, see rank | 10.83% | 6.43% |
| Welsh | 8,271 | 0.82%, see rank | 0.74% | 0.65% |
US Census 2000 data
849,292 (87.58%) out of the total population of 969,749 reported first ancestry.
| Fairfax County | % of the Total Population | Virginia | U.S. | |
| Arab | 17,757 | 1.83%, see rank | 0.53% | 0.36% |
| Czech | 2,195 | 0.23%, see rank | 0.14% | 0.27% |
| Danish | 2,327 | 0.24%, see rank | 0.15% | 0.30% |
| Dutch | 6,449 | 0.67%, see rank | 0.64% | 0.91% |
| English | 78,877 | 8.13%, see rank | 8.34% | 5.91% |
| French | 17,595 | 1.81%, see rank | 1.56% | 2.39% |
| German | 85,280 | 8.79%, see rank | 7.93% | 10.81% |
| Greek | 5,735 | 0.59%, see rank | 0.30% | 0.34% |
| Hungarian | 3,724 | 0.38%, see rank | 0.23% | 0.32% |
| Irish | 80,705 | 8.32%, see rank | 6.46% | 6.85% |
| Italian | 42,184 | 4.35%, see rank | 2.87% | 4.59% |
| Norwegian | 7,065 | 0.73%, see rank | 0.48% | 1.15% |
| Polish | 18,610 | 1.92%, see rank | 1.17% | 2.24% |
| Portuguese | 1,882 | 0.19%, see rank | 0.13% | 0.33% |
| Russian | 10,357 | 1.07%, see rank | 0.45% | 0.68% |
| Scotch-Irish | 15,150 | 1.56%, see rank | 1.75% | 1.17% |
| Scottish | 15,618 | 1.61%, see rank | 1.43% | 1.12% |
| Subsaharan African | 16,718 | 1.72%, see rank | 0.96% | 0.61% |
| Swedish | 6,607 | 0.68%, see rank | 0.44% | 0.87% |
| Swiss | 2,057 | 0.21%, see rank | 0.16% | 0.19% |
| Ukrainian | 2,762 | 0.28%, see rank | 0.15% | 0.24% |
| American | 46,346 | 4.78%, see rank | 11.42% | 7.33% |
| Welsh | 4,578 | 0.47%, see rank | 0.38% | 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.