Boulder city, CO Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 7, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 104.93K Boulder city, CO population, 27.68K had Unclassified ancestry (26.38%), 21.49K had Other Groups ancestry (20.48%), and 16.99K had German ancestry (16.19%).
The chart below shows the top 10 ancestry groups, and the table below shows both the number and percentages for all ancestry groups.
You can also see similar information for other Colorado cities and places, Colorado counties, and for Colorado.
Data Source: US Census - ACS 5-Year Estimates (2021).
Boulder city, CO Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Unclassified | 27678 | 26.38 |
| Other Groups | 21489 | 20.48 |
| German | 16989 | 16.19 |
| Irish | 12111 | 11.54 |
| English | 11939 | 11.38 |
| Italian | 6327 | 6.03 |
| European | 4107 | 3.91 |
| Polish | 3761 | 3.58 |
| Scottish | 3465 | 3.30 |
| French (except Basque) | 2485 | 2.37 |
| American | 2477 | 2.36 |
| Norwegian | 2331 | 2.22 |
| Russian | 2255 | 2.15 |
| Swedish | 1861 | 1.77 |
| Welsh | 1447 | 1.38 |
| British | 1430 | 1.36 |
| Dutch | 1359 | 1.30 |
| Scotch Irish | 1204 | 1.15 |
| Czech | 1068 | 1.02 |
| Danish | 888 | 0.85 |
| Lithuanian | 872 | 0.83 |
| Eastern European | 813 | 0.78 |
| Austrian | 726 | 0.69 |
| Scandinavian | 692 | 0.66 |
| Greek | 687 | 0.66 |
| Hungarian | 671 | 0.64 |
| Swiss | 666 | 0.64 |
| French Canadian | 642 | 0.61 |
| Ukrainian | 599 | 0.57 |
| Finnish | 564 | 0.54 |
| Subsaharan African | 531 | 0.51 |
| Northern European | 513 | 0.49 |
| Iranian | 480 | 0.46 |
| Canadian | 427 | 0.41 |
| Portuguese | 406 | 0.39 |
| Belgian | 322 | 0.31 |
| West Indian (except Hispanic groups) | 243 | 0.23 |
| Brazilian | 223 | 0.21 |
| Israeli | 218 | 0.21 |
| Romanian | 217 | 0.21 |
| Jamaican | 177 | 0.17 |
| Arab | 175 | 0.17 |
| Slovak | 174 | 0.17 |
| Turkish | 173 | 0.17 |
| Croatian | 171 | 0.16 |
| Czechoslovakian | 166 | 0.16 |
| South African | 161 | 0.15 |
| Armenian | 149 | 0.14 |
| Yugoslavian | 137 | 0.13 |
| Australian | 105 | 0.10 |