Stillwater County, MT Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 8.92K Stillwater County, MT population, 2.53K had German ancestry (28.38%), 1.92K had Unclassified ancestry (21.57%), and 1.28K had Irish ancestry (14.39%).
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 see similar information for other Montana counties, and for Montana.
Data Source: US Census - ACS 5-Year Estimates (2021).
Stillwater County, MT Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| German | 2530 | 28.38 |
| Unclassified | 1923 | 21.57 |
| Irish | 1283 | 14.39 |
| Other Groups | 1205 | 13.52 |
| English | 1016 | 11.40 |
| Norwegian | 846 | 9.49 |
| American | 442 | 4.96 |
| French (except Basque) | 263 | 2.95 |
| Scotch Irish | 263 | 2.95 |
| Italian | 239 | 2.68 |
| Scottish | 235 | 2.64 |
| Dutch | 153 | 1.72 |
| Swedish | 151 | 1.69 |
| Scandinavian | 121 | 1.36 |
| Polish | 116 | 1.30 |
| Russian | 115 | 1.29 |
| Finnish | 112 | 1.26 |
| Croatian | 109 | 1.22 |
| European | 102 | 1.14 |
| Welsh | 97 | 1.09 |
| Danish | 77 | 0.86 |
| Iranian | 77 | 0.86 |
| Czech | 71 | 0.80 |
| Subsaharan African | 57 | 0.64 |
| African | 57 | 0.64 |
| British | 52 | 0.58 |
| Swiss | 52 | 0.58 |
| Austrian | 46 | 0.52 |
| French Canadian | 39 | 0.44 |
| Hungarian | 30 | 0.34 |
| Northern European | 25 | 0.28 |
| Canadian | 17 | 0.19 |
| Czechoslovakian | 15 | 0.17 |
| Portuguese | 14 | 0.16 |
| Slovak | 13 | 0.15 |
| Belgian | 12 | 0.14 |
| Basque | 11 | 0.12 |
| Yugoslavian | 11 | 0.12 |
| Eastern European | 7 | 0.08 |
| German Russian | 5 | 0.06 |
| Greek | 3 | 0.03 |
| Slovene | 2 | 0.02 |
| Ukrainian | 2 | 0.02 |