Colorado Population By Ancestry in 2021 (ACS-5Yrs)
Updated on April 15, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 5.72M Colorado population, 1.71M had Other Groups ancestry (29.94%), 1.30M had Unclassified ancestry (22.72%), and 1.03M had German ancestry (18.01%).
The chart below shows the top 10 ancestry groups by percentage, and the table below shows both the population and percentages for many ancestry groups.
You can see similar information for other states.
NB: People could belong to one or more ancestry groups.
Related Topics: Colorado ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Colorado Population By Ancestry in 2021
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| Ancestry | Population | Percent of Population (%) |
|---|---|---|
| Other Groups | 1713651 | 29.94 |
| Unclassified | 1300156 | 22.72 |
| German | 1030800 | 18.01 |
| English | 624984 | 10.92 |
| Irish | 620602 | 10.84 |
| Italian | 276530 | 4.83 |
| American | 205974 | 3.60 |
| European | 158944 | 2.78 |
| Scottish | 138211 | 2.42 |
| French (except Basque) | 137467 | 2.40 |
| Polish | 133378 | 2.33 |
| Swedish | 119954 | 2.10 |
| Norwegian | 117575 | 2.05 |
| Dutch | 83870 | 1.47 |
| Scotch Irish | 61950 | 1.08 |
| Russian | 55916 | 0.98 |
| Subsaharan African | 50162 | 0.88 |
| Welsh | 47568 | 0.83 |
| British | 43989 | 0.77 |
| Danish | 39800 | 0.70 |
| Scandinavian | 34100 | 0.60 |
| Czech | 34024 | 0.59 |
| French Canadian | 25975 | 0.45 |
| Swiss | 22442 | 0.39 |
| Hungarian | 20397 | 0.36 |
| Greek | 20217 | 0.35 |
| Eastern European | 20011 | 0.35 |
| Austrian | 17313 | 0.30 |
| Northern European | 16906 | 0.30 |
| African | 16840 | 0.29 |
| Portuguese | 14824 | 0.26 |
| Ukrainian | 14591 | 0.26 |
| Lithuanian | 12401 | 0.22 |
| Finnish | 12269 | 0.21 |
| Ethiopian | 11724 | 0.21 |
| Canadian | 11663 | 0.20 |
| West Indian (except Hispanic groups) | 9296 | 0.16 |
| Slovak | 8268 | 0.14 |
| Belgian | 7308 | 0.13 |
| Czechoslovakian | 7172 | 0.13 |
| Lebanese | 7098 | 0.12 |
| Croatian | 6928 | 0.12 |
| Slovene | 6512 | 0.11 |
| Romanian | 6330 | 0.11 |
| Iranian | 6222 | 0.11 |
| Armenian | 5000 | 0.09 |
| Jamaican | 4652 | 0.08 |
| Brazilian | 4288 | 0.08 |
| Yugoslavian | 4150 | 0.07 |
| Nigerian | 4129 | 0.07 |
| Slavic | 3918 | 0.07 |
| Somali | 3426 | 0.06 |
| Arab | 3127 | 0.06 |
| Serbian | 3017 | 0.05 |
| Turkish | 2964 | 0.05 |
| Australian | 2812 | 0.05 |
| Moroccan | 2693 | 0.05 |
| Ghanaian | 2558 | 0.05 |
| Israeli | 2232 | 0.04 |
| Basque | 2069 | 0.04 |
| Syrian | 2034 | 0.04 |
| Egyptian | 2012 | 0.04 |
| Iraqi | 1905 | 0.03 |
| Latvian | 1902 | 0.03 |
| South African | 1875 | 0.03 |
| Sudanese | 1839 | 0.03 |
| Bulgarian | 1815 | 0.03 |
| Pennsylvania German | 1711 | 0.03 |
| Celtic | 1691 | 0.03 |
| Icelander | 1670 | 0.03 |
| German Russian | 1501 | 0.03 |
| Palestinian | 1392 | 0.02 |
| Haitian | 1381 | 0.02 |
| West Indian | 1284 | 0.02 |
| Cajun | 1229 | 0.02 |
| Kenyan | 1191 | 0.02 |
| Afghan | 1171 | 0.02 |
| Albania | 1126 | 0.02 |
| New Zealander | 1079 | 0.02 |
| Luxembourger | 1003 | 0.02 |
| Estonian | 863 | 0.02 |
| Jordanian | 848 | 0.02 |
| Macedonian | 601 | 0.01 |
| Ugandan | 568 | 0.01 |
| Trinidadian and Tobagonian | 553 | 0.01 |
| Maltese | 506 | 0.01 |
| Belizean | 465 | 0.01 |
| Barbadian | 450 | 0.01 |
| Senegalese | 404 | 0.01 |
| Liberian | 379 | 0.01 |
| Cape Verdean | 375 | 0.01 |
| British West Indian | 277 | 0.01 |
| Sierra Leonean | 255 | 0.005 |
| Alsatian | 251 | 0.004 |
| Guyanese | 226 | 0.004 |
| Assyrian/Chaldean/Syriac | 151 | 0.003 |
| Carpatho Rusyn | 144 | 0.003 |
| Zimbabwean | 137 | 0.002 |
| Dutch West Indian | 132 | 0.002 |
| US Virgin Islander | 118 | 0.002 |
| Cypriot | 99 | 0.002 |
| Bahamian | 28 | 0.001 |
| Bermudan | 14 | 0.000 |
| Soviet Union | 6 | 0.000 |
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