Cascade County, MT Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 84.18K Cascade County, MT population, 18.82K had Unclassified ancestry (22.35%), 17.75K had German ancestry (21.09%), and 13.99K had Other Groups ancestry (16.61%).
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 Montana counties, and for Montana.
NB: People could belong to one or more ancestry groups.
Data Source: US Census Bureau.
Cascade County, MT Population By Ancestry in 2021
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| Ancestry | Population | Percent of Pop. (%) |
|---|---|---|
| Unclassified | 18815 | 22.35 |
| German | 17752 | 21.09 |
| Other Groups | 13986 | 16.61 |
| Irish | 9770 | 11.61 |
| English | 8805 | 10.46 |
| American | 7159 | 8.51 |
| Norwegian | 6474 | 7.69 |
| Italian | 3655 | 4.34 |
| European | 3316 | 3.94 |
| French (except Basque) | 2408 | 2.86 |
| Scottish | 2044 | 2.43 |
| Swedish | 1839 | 2.19 |
| Polish | 1376 | 1.64 |
| Scandinavian | 1317 | 1.57 |
| Scotch Irish | 1126 | 1.34 |
| Dutch | 997 | 1.18 |
| Welsh | 986 | 1.17 |
| French Canadian | 822 | 0.98 |
| Finnish | 741 | 0.88 |
| Danish | 618 | 0.73 |
| Russian | 567 | 0.67 |
| British | 513 | 0.61 |
| Czech | 505 | 0.60 |
| Greek | 495 | 0.59 |
| Austrian | 361 | 0.43 |
| Swiss | 349 | 0.42 |
| Hungarian | 303 | 0.36 |
| Northern European | 303 | 0.36 |
| Croatian | 280 | 0.33 |
| Slavic | 250 | 0.30 |
| Czechoslovakian | 243 | 0.29 |
| Portuguese | 241 | 0.29 |
| Belgian | 216 | 0.26 |
| Slovak | 184 | 0.22 |
| Canadian | 175 | 0.21 |
| West Indian (except Hispanic groups) | 145 | 0.17 |
| Eastern European | 129 | 0.15 |
| Ukrainian | 128 | 0.15 |
| Lithuanian | 117 | 0.14 |
| Yugoslavian | 109 | 0.13 |
| Slovene | 104 | 0.12 |
| Romanian | 89 | 0.11 |
| Subsaharan African | 87 | 0.10 |
| Iranian | 76 | 0.09 |
| Arab | 70 | 0.08 |
| German Russian | 67 | 0.08 |
| Jamaican | 62 | 0.07 |
| Armenian | 53 | 0.06 |
| Haitian | 47 | 0.06 |
| Basque | 39 | 0.05 |
| Icelander | 29 | 0.03 |
| Cajun | 23 | 0.03 |
| Pennsylvania German | 22 | 0.03 |
| Bahamian | 21 | 0.03 |
| Australian | 17 | 0.02 |
| Brazilian | 17 | 0.02 |
| Estonian | 17 | 0.02 |
| Nigerian | 16 | 0.02 |
| Lebanese | 15 | 0.02 |
| West Indian | 15 | 0.02 |
| Turkish | 13 | 0.02 |
| Bulgarian | 12 | 0.01 |
| Egyptian | 10 | 0.01 |
| Luxembourger | 10 | 0.01 |
| Celtic | 5 | 0.01 |
| Latvian | 5 | 0.01 |
| Serbian | 3 | 0.00 |
| African | 1 | 0.00 |