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Gaithersburg, MD Historical First Ancestry Data
ACS 2010-2014 data
58,179 (91.63%) out of the total population of 63,491 reported first ancestry.
| Gaithersburg, MD | % of the Total Population | Maryland | U.S. | |
| Arab | 502 | 0.79%, see rank | 0.48% | 0.56% |
| Czech | 139 | 0.22%, see rank | 0.38% | 0.47% |
| Danish | 119 | 0.19%, see rank | 0.18% | 0.42% |
| Dutch | 319 | 0.50%, see rank | 0.86% | 1.40% |
| English | 3,843 | 6.05%, see rank | 7.82% | 8.02% |
| French | 1,319 | 2.08%, see rank | 1.89% | 3.34% |
| German | 4,994 | 7.87%, see rank | 14.69% | 15.03% |
| Greek | 240 | 0.38%, see rank | 0.59% | 0.41% |
| Hungarian | 288 | 0.45%, see rank | 0.41% | 0.46% |
| Irish | 4,210 | 6.63%, see rank | 11.24% | 10.80% |
| Italian | 1,953 | 3.08%, see rank | 5.21% | 5.52% |
| Norwegian | 221 | 0.35%, see rank | 0.51% | 1.42% |
| Polish | 1,462 | 2.30%, see rank | 3.31% | 3.01% |
| Portuguese | 94 | 0.15%, see rank | 0.18% | 0.44% |
| Russian | 1,595 | 2.51%, see rank | 1.33% | 0.92% |
| Scotch-Irish | 295 | 0.46%, see rank | 0.75% | 0.99% |
| Scottish | 771 | 1.21%, see rank | 1.63% | 1.72% |
| Subsaharan African | 4,144 | 6.53%, see rank | 3.62% | 0.95% |
| Swedish | 393 | 0.62%, see rank | 0.58% | 1.27% |
| Swiss | 48 | 0.08%, see rank | 0.20% | 0.30% |
| Ukrainian | 201 | 0.32%, see rank | 0.37% | 0.31% |
| American | 1,971 | 3.10%, see rank | 5.14% | 7.12% |
| Welsh | 149 | 0.23%, see rank | 0.63% | 0.57% |
ACS 2008-2012 data
56,612 (94.00%) out of the total population of 60,223 reported first ancestry.
| Gaithersburg, MD | % of the Total Population | Maryland | U.S. | |
| Arab | 393 | 0.65%, see rank | 0.46% | 0.53% |
| Czech | 143 | 0.24%, see rank | 0.43% | 0.50% |
| Danish | 311 | 0.52%, see rank | 0.21% | 0.45% |
| Dutch | 381 | 0.63%, see rank | 0.95% | 1.51% |
| English | 4,250 | 7.06%, see rank | 8.43% | 8.53% |
| French | 1,384 | 2.30%, see rank | 2.08% | 3.54% |
| German | 5,753 | 9.55%, see rank | 15.67% | 15.79% |
| Greek | 205 | 0.34%, see rank | 0.59% | 0.42% |
| Hungarian | 351 | 0.58%, see rank | 0.43% | 0.48% |
| Irish | 4,969 | 8.25%, see rank | 11.84% | 11.36% |
| Italian | 1,973 | 3.28%, see rank | 5.34% | 5.66% |
| Norwegian | 240 | 0.40%, see rank | 0.51% | 1.46% |
| Polish | 1,350 | 2.24%, see rank | 3.44% | 3.13% |
| Portuguese | 68 | 0.11%, see rank | 0.18% | 0.46% |
| Russian | 1,943 | 3.23%, see rank | 1.45% | 0.97% |
| Scotch-Irish | 532 | 0.88%, see rank | 0.84% | 1.07% |
| Scottish | 732 | 1.22%, see rank | 1.70% | 1.81% |
| Subsaharan African | 3,255 | 5.40%, see rank | 3.17% | 0.93% |
| Swedish | 548 | 0.91%, see rank | 0.61% | 1.34% |
| Swiss | 92 | 0.15%, see rank | 0.22% | 0.31% |
| Ukrainian | 177 | 0.29%, see rank | 0.40% | 0.31% |
| American | 1,426 | 2.37%, see rank | 4.77% | 6.72% |
| Welsh | 265 | 0.44%, see rank | 0.69% | 0.60% |
ACS 2006-2010 data
53,626 (92.19%) out of the total population of 58,169 reported first ancestry.
| Gaithersburg, MD | % of the Total Population | Maryland | U.S. | |
| Arab | 291 | 0.50%, see rank | 0.42% | 0.50% |
| Czech | 71 | 0.12%, see rank | 0.42% | 0.53% |
| Danish | 393 | 0.68%, see rank | 0.21% | 0.48% |
| Dutch | 357 | 0.61%, see rank | 1.04% | 1.63% |
| English | 3,813 | 6.56%, see rank | 8.85% | 9.02% |
| French | 1,150 | 1.98%, see rank | 2.26% | 3.77% |
| German | 5,330 | 9.16%, see rank | 16.31% | 16.51% |
| Greek | 310 | 0.53%, see rank | 0.60% | 0.44% |
| Hungarian | 316 | 0.54%, see rank | 0.49% | 0.51% |
| Irish | 4,479 | 7.70%, see rank | 12.18% | 11.76% |
| Italian | 1,955 | 3.36%, see rank | 5.47% | 5.78% |
| Norwegian | 263 | 0.45%, see rank | 0.51% | 1.51% |
| Polish | 1,189 | 2.04%, see rank | 3.51% | 3.24% |
| Portuguese | 74 | 0.13%, see rank | 0.20% | 0.47% |
| Russian | 1,868 | 3.21%, see rank | 1.46% | 1.01% |
| Scotch-Irish | 810 | 1.39%, see rank | 1.44% | 1.72% |
| Scottish | 882 | 1.52%, see rank | 1.76% | 1.92% |
| Subsaharan African | 2,112 | 3.63%, see rank | 2.93% | 0.91% |
| Swedish | 531 | 0.91%, see rank | 0.65% | 1.41% |
| Swiss | 110 | 0.19%, see rank | 0.23% | 0.33% |
| Ukrainian | 237 | 0.41%, see rank | 0.38% | 0.31% |
| American | 1,197 | 2.06%, see rank | 4.87% | 6.28% |
| Welsh | 266 | 0.46%, see rank | 0.74% | 0.63% |
ACS 2005-2009 data
54,673 (93.25%) out of the total population of 58,632 reported first ancestry.
| Gaithersburg, MD | % of the Total Population | Maryland | U.S. | |
| Arab | 309 | 0.53%, see rank | 0.43% | 0.50% |
| Czech | 175 | 0.30%, see rank | 0.43% | 0.54% |
| Danish | 562 | 0.96%, see rank | 0.21% | 0.49% |
| Dutch | 315 | 0.54%, see rank | 1.08% | 1.68% |
| English | 4,244 | 7.24%, see rank | 9.32% | 9.29% |
| French | 1,079 | 1.84%, see rank | 2.32% | 3.90% |
| German | 5,521 | 9.42%, see rank | 16.84% | 16.89% |
| Greek | 307 | 0.52%, see rank | 0.61% | 0.45% |
| Hungarian | 361 | 0.62%, see rank | 0.49% | 0.52% |
| Irish | 4,924 | 8.40%, see rank | 12.56% | 12.01% |
| Italian | 2,269 | 3.87%, see rank | 5.63% | 5.91% |
| Norwegian | 317 | 0.54%, see rank | 0.54% | 1.55% |
| Polish | 1,234 | 2.10%, see rank | 3.63% | 3.32% |
| Portuguese | 154 | 0.26%, see rank | 0.21% | 0.48% |
| Russian | 2,566 | 4.38%, see rank | 1.50% | 1.04% |
| Scotch-Irish | 808 | 1.38%, see rank | 1.49% | 1.77% |
| Scottish | 941 | 1.60%, see rank | 1.85% | 1.97% |
| Subsaharan African | 1,716 | 2.93%, see rank | 2.87% | 0.88% |
| Swedish | 549 | 0.94%, see rank | 0.67% | 1.45% |
| Swiss | 141 | 0.24%, see rank | 0.25% | 0.34% |
| Ukrainian | 274 | 0.47%, see rank | 0.40% | 0.32% |
| American | 1,313 | 2.24%, see rank | 5.14% | 6.43% |
| Welsh | 410 | 0.70%, see rank | 0.77% | 0.65% |
US Census 2000 data
46,116 (87.65%) out of the total population of 52,613 reported first ancestry.
| Gaithersburg, MD | % of the Total Population | Maryland | U.S. | |
| Arab | 279 | 0.53%, see rank | 0.32% | 0.36% |
| Czech | 37 | 0.07%, see rank | 0.21% | 0.27% |
| Danish | 51 | 0.10%, see rank | 0.13% | 0.30% |
| Dutch | 185 | 0.35%, see rank | 0.52% | 0.91% |
| English | 2,502 | 4.76%, see rank | 6.01% | 5.91% |
| French | 691 | 1.31%, see rank | 1.31% | 2.39% |
| German | 3,395 | 6.45%, see rank | 10.82% | 10.81% |
| Greek | 275 | 0.52%, see rank | 0.51% | 0.34% |
| Hungarian | 224 | 0.43%, see rank | 0.27% | 0.32% |
| Irish | 3,397 | 6.46%, see rank | 7.46% | 6.85% |
| Italian | 1,876 | 3.57%, see rank | 4.06% | 4.59% |
| Norwegian | 179 | 0.34%, see rank | 0.35% | 1.15% |
| Polish | 782 | 1.49%, see rank | 2.44% | 2.24% |
| Portuguese | 158 | 0.30%, see rank | 0.12% | 0.33% |
| Russian | 968 | 1.84%, see rank | 1.10% | 0.68% |
| Scotch-Irish | 445 | 0.85%, see rank | 0.95% | 1.17% |
| Scottish | 715 | 1.36%, see rank | 1.10% | 1.12% |
| Subsaharan African | 1,575 | 2.99%, see rank | 1.81% | 0.61% |
| Swedish | 150 | 0.29%, see rank | 0.36% | 0.87% |
| Swiss | 120 | 0.23%, see rank | 0.13% | 0.19% |
| Ukrainian | 182 | 0.35%, see rank | 0.28% | 0.24% |
| American | 2,315 | 4.40%, see rank | 5.77% | 7.33% |
| Welsh | 110 | 0.21%, 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.