Middlesex County Historical First Ancestry Data
ACS 2010-2014 data
1,391,340 (90.36%) out of the total population of 1,539,832 reported first ancestry.
| Middlesex County | % of the Total Population | Massachusetts | U.S. | |
| Arab | 17,902 | 1.16%, see rank | 1.10% | 0.56% |
| Czech | 3,255 | 0.21%, see rank | 0.18% | 0.47% |
| Danish | 4,465 | 0.29%, see rank | 0.22% | 0.42% |
| Dutch | 10,758 | 0.70%, see rank | 0.65% | 1.40% |
| English | 153,042 | 9.94%, see rank | 10.33% | 8.02% |
| French | 123,978 | 8.05%, see rank | 11.20% | 3.34% |
| German | 104,680 | 6.80%, see rank | 6.24% | 15.03% |
| Greek | 24,821 | 1.61%, see rank | 1.24% | 0.41% |
| Hungarian | 6,342 | 0.41%, see rank | 0.30% | 0.46% |
| Irish | 341,249 | 22.16%, see rank | 22.17% | 10.80% |
| Italian | 234,817 | 15.25%, see rank | 13.57% | 5.52% |
| Norwegian | 9,716 | 0.63%, see rank | 0.53% | 1.42% |
| Polish | 57,116 | 3.71%, see rank | 4.80% | 3.01% |
| Portuguese | 47,679 | 3.10%, see rank | 4.63% | 0.44% |
| Russian | 38,269 | 2.49%, see rank | 1.76% | 0.92% |
| Scotch-Irish | 11,132 | 0.72%, see rank | 0.67% | 0.99% |
| Scottish | 36,375 | 2.36%, see rank | 2.34% | 1.72% |
| Subsaharan African | 19,726 | 1.28%, see rank | 1.86% | 0.95% |
| Swedish | 25,089 | 1.63%, see rank | 1.75% | 1.27% |
| Swiss | 3,386 | 0.22%, see rank | 0.17% | 0.30% |
| Ukrainian | 6,497 | 0.42%, see rank | 0.36% | 0.31% |
| American | 59,867 | 3.89%, see rank | 4.41% | 7.12% |
| Welsh | 6,009 | 0.39%, see rank | 0.34% | 0.57% |
ACS 2008-2012 data
1,394,379 (92.49%) out of the total population of 1,507,558 reported first ancestry.
| Middlesex County | % of the Total Population | Massachusetts | U.S. | |
| Arab | 16,102 | 1.07%, see rank | 1.02% | 0.53% |
| Czech | 3,609 | 0.24%, see rank | 0.20% | 0.50% |
| Danish | 4,825 | 0.32%, see rank | 0.24% | 0.45% |
| Dutch | 11,448 | 0.76%, see rank | 0.70% | 1.51% |
| English | 162,510 | 10.78%, see rank | 11.02% | 8.53% |
| French | 127,703 | 8.47%, see rank | 11.89% | 3.54% |
| German | 106,423 | 7.06%, see rank | 6.56% | 15.79% |
| Greek | 24,869 | 1.65%, see rank | 1.28% | 0.42% |
| Hungarian | 6,198 | 0.41%, see rank | 0.32% | 0.48% |
| Irish | 350,168 | 23.23%, see rank | 23.08% | 11.36% |
| Italian | 240,262 | 15.94%, see rank | 13.92% | 5.66% |
| Norwegian | 9,755 | 0.65%, see rank | 0.53% | 1.46% |
| Polish | 60,047 | 3.98%, see rank | 5.11% | 3.13% |
| Portuguese | 46,803 | 3.10%, see rank | 4.75% | 0.46% |
| Russian | 39,986 | 2.65%, see rank | 1.86% | 0.97% |
| Scotch-Irish | 11,362 | 0.75%, see rank | 0.71% | 1.07% |
| Scottish | 38,313 | 2.54%, see rank | 2.48% | 1.81% |
| Subsaharan African | 18,975 | 1.26%, see rank | 1.76% | 0.93% |
| Swedish | 25,084 | 1.66%, see rank | 1.85% | 1.34% |
| Swiss | 3,397 | 0.23%, see rank | 0.18% | 0.31% |
| Ukrainian | 6,906 | 0.46%, see rank | 0.38% | 0.31% |
| American | 53,465 | 3.55%, see rank | 3.91% | 6.72% |
| Welsh | 6,116 | 0.41%, see rank | 0.37% | 0.60% |
ACS 2006-2010 data
1,371,383 (92.69%) out of the total population of 1,479,491 reported first ancestry.
| Middlesex County | % of the Total Population | Massachusetts | U.S. | |
| Arab | 14,742 | 1.00%, see rank | 0.96% | 0.50% |
| Czech | 3,616 | 0.24%, see rank | 0.21% | 0.53% |
| Danish | 4,703 | 0.32%, see rank | 0.24% | 0.48% |
| Dutch | 11,070 | 0.75%, see rank | 0.73% | 1.63% |
| English | 166,253 | 11.24%, see rank | 11.54% | 9.02% |
| French | 134,955 | 9.12%, see rank | 12.54% | 3.77% |
| German | 105,760 | 7.15%, see rank | 6.75% | 16.51% |
| Greek | 24,097 | 1.63%, see rank | 1.32% | 0.44% |
| Hungarian | 6,350 | 0.43%, see rank | 0.32% | 0.51% |
| Irish | 348,275 | 23.54%, see rank | 23.41% | 11.76% |
| Italian | 238,986 | 16.15%, see rank | 13.93% | 5.78% |
| Norwegian | 8,921 | 0.60%, see rank | 0.52% | 1.51% |
| Polish | 59,681 | 4.03%, see rank | 5.23% | 3.24% |
| Portuguese | 45,215 | 3.06%, see rank | 4.81% | 0.47% |
| Russian | 39,042 | 2.64%, see rank | 1.86% | 1.01% |
| Scotch-Irish | 29,903 | 2.02%, see rank | 1.90% | 1.72% |
| Scottish | 39,515 | 2.67%, see rank | 2.66% | 1.92% |
| Subsaharan African | 18,281 | 1.24%, see rank | 1.67% | 0.91% |
| Swedish | 25,671 | 1.74%, see rank | 1.90% | 1.41% |
| Swiss | 3,338 | 0.23%, see rank | 0.19% | 0.33% |
| Ukrainian | 6,309 | 0.43%, see rank | 0.37% | 0.31% |
| American | 43,317 | 2.93%, see rank | 3.27% | 6.28% |
| Welsh | 6,622 | 0.45%, see rank | 0.41% | 0.63% |
ACS 2005-2009 data
1,375,039 (92.89%) out of the total population of 1,480,260 reported first ancestry.
| Middlesex County | % of the Total Population | Massachusetts | U.S. | |
| Arab | 14,844 | 1.00%, see rank | 0.97% | 0.50% |
| Czech | 3,738 | 0.25%, see rank | 0.22% | 0.54% |
| Danish | 5,188 | 0.35%, see rank | 0.26% | 0.49% |
| Dutch | 11,211 | 0.76%, see rank | 0.74% | 1.68% |
| English | 173,748 | 11.74%, see rank | 11.92% | 9.29% |
| French | 142,564 | 9.63%, see rank | 12.90% | 3.90% |
| German | 105,892 | 7.15%, see rank | 6.77% | 16.89% |
| Greek | 24,561 | 1.66%, see rank | 1.34% | 0.45% |
| Hungarian | 6,464 | 0.44%, see rank | 0.33% | 0.52% |
| Irish | 355,341 | 24.01%, see rank | 23.68% | 12.01% |
| Italian | 243,594 | 16.46%, see rank | 14.12% | 5.91% |
| Norwegian | 8,961 | 0.61%, see rank | 0.53% | 1.55% |
| Polish | 60,676 | 4.10%, see rank | 5.30% | 3.32% |
| Portuguese | 49,113 | 3.32%, see rank | 4.92% | 0.48% |
| Russian | 39,157 | 2.65%, see rank | 1.85% | 1.04% |
| Scotch-Irish | 31,351 | 2.12%, see rank | 1.95% | 1.77% |
| Scottish | 41,767 | 2.82%, see rank | 2.74% | 1.97% |
| Subsaharan African | 16,929 | 1.14%, see rank | 1.56% | 0.88% |
| Swedish | 26,170 | 1.77%, see rank | 1.96% | 1.45% |
| Swiss | 3,247 | 0.22%, see rank | 0.19% | 0.34% |
| Ukrainian | 6,432 | 0.43%, see rank | 0.37% | 0.32% |
| American | 43,549 | 2.94%, see rank | 3.42% | 6.43% |
| Welsh | 7,004 | 0.47%, see rank | 0.43% | 0.65% |
US Census 2000 data
1,285,702 (87.74%) out of the total population of 1,465,396 reported first ancestry.
| Middlesex County | % of the Total Population | Massachusetts | U.S. | |
| Arab | 9,366 | 0.64%, see rank | 0.67% | 0.36% |
| Czech | 1,587 | 0.11%, see rank | 0.09% | 0.27% |
| Danish | 2,867 | 0.20%, see rank | 0.14% | 0.30% |
| Dutch | 5,507 | 0.38%, see rank | 0.35% | 0.91% |
| English | 103,399 | 7.06%, see rank | 7.05% | 5.91% |
| French | 95,701 | 6.53%, see rank | 8.81% | 2.39% |
| German | 52,973 | 3.61%, see rank | 3.27% | 10.81% |
| Greek | 20,641 | 1.41%, see rank | 1.03% | 0.34% |
| Hungarian | 3,829 | 0.26%, see rank | 0.17% | 0.32% |
| Irish | 256,862 | 17.53%, see rank | 16.39% | 6.85% |
| Italian | 201,982 | 13.78%, see rank | 10.82% | 4.59% |
| Norwegian | 6,263 | 0.43%, see rank | 0.37% | 1.15% |
| Polish | 33,440 | 2.28%, see rank | 3.50% | 2.24% |
| Portuguese | 30,985 | 2.11%, see rank | 3.66% | 0.33% |
| Russian | 29,098 | 1.99%, see rank | 1.32% | 0.68% |
| Scotch-Irish | 18,307 | 1.25%, see rank | 1.15% | 1.17% |
| Scottish | 22,776 | 1.55%, see rank | 1.52% | 1.12% |
| Subsaharan African | 10,271 | 0.70%, see rank | 1.20% | 0.61% |
| Swedish | 14,586 | 1.00%, see rank | 1.13% | 0.87% |
| Swiss | 1,880 | 0.13%, see rank | 0.09% | 0.19% |
| Ukrainian | 4,555 | 0.31%, see rank | 0.26% | 0.24% |
| American | 52,838 | 3.61%, see rank | 3.85% | 7.33% |
| Welsh | 2,640 | 0.18%, see rank | 0.17% | 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.