Montana Population By Ancestry in 2021 (ACS-5Yrs)
Updated on April 15, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 1.08M Montana population, 256.64K had German ancestry (23.81%), 243.21K had Unclassified ancestry (22.56%), and 181.26K had Other Groups ancestry (16.82%).
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: Montana ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Montana Population By Ancestry in 2021
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| Ancestry | Population | Percent of Population (%) |
|---|---|---|
| German | 256644 | 23.81 |
| Unclassified | 243213 | 22.56 |
| Other Groups | 181260 | 16.82 |
| Irish | 146233 | 13.57 |
| English | 129462 | 12.01 |
| Norwegian | 89699 | 8.32 |
| American | 52827 | 4.90 |
| Italian | 38889 | 3.61 |
| French (except Basque) | 32631 | 3.03 |
| Scottish | 29851 | 2.77 |
| Swedish | 29457 | 2.73 |
| European | 27919 | 2.59 |
| Dutch | 18982 | 1.76 |
| Polish | 18912 | 1.75 |
| Scotch Irish | 15201 | 1.41 |
| Scandinavian | 13014 | 1.21 |
| Danish | 11971 | 1.11 |
| Welsh | 9505 | 0.88 |
| Russian | 8805 | 0.82 |
| French Canadian | 7795 | 0.72 |
| Finnish | 7003 | 0.65 |
| Czech | 6760 | 0.63 |
| British | 6530 | 0.61 |
| Northern European | 5453 | 0.51 |
| Swiss | 5395 | 0.50 |
| Austrian | 4230 | 0.39 |
| Hungarian | 3673 | 0.34 |
| Ukrainian | 3463 | 0.32 |
| Greek | 2775 | 0.26 |
| Croatian | 2357 | 0.22 |
| Belgian | 2319 | 0.22 |
| Eastern European | 2166 | 0.20 |
| Portuguese | 2005 | 0.19 |
| Canadian | 1967 | 0.18 |
| Czechoslovakian | 1583 | 0.15 |
| Lithuanian | 1540 | 0.14 |
| Yugoslavian | 1533 | 0.14 |
| Subsaharan African | 1478 | 0.14 |
| Slovak | 1345 | 0.13 |
| Slavic | 1150 | 0.11 |
| Romanian | 928 | 0.09 |
| West Indian (except Hispanic groups) | 887 | 0.08 |
| Serbian | 857 | 0.08 |
| Slovene | 856 | 0.08 |
| African | 839 | 0.08 |
| Lebanese | 772 | 0.07 |
| Armenian | 672 | 0.06 |
| Basque | 581 | 0.05 |
| Pennsylvania German | 579 | 0.05 |
| Iranian | 402 | 0.04 |
| Australian | 399 | 0.04 |
| Bulgarian | 384 | 0.04 |
| German Russian | 349 | 0.03 |
| Turkish | 305 | 0.03 |
| Icelander | 260 | 0.02 |
| Ethiopian | 232 | 0.02 |
| Haitian | 228 | 0.02 |
| Celtic | 220 | 0.02 |
| Brazilian | 203 | 0.02 |
| Jamaican | 197 | 0.02 |
| Egyptian | 181 | 0.02 |
| West Indian | 175 | 0.02 |
| Luxembourger | 158 | 0.02 |
| Arab | 148 | 0.01 |
| South African | 127 | 0.01 |
| Alsatian | 114 | 0.01 |
| Dutch West Indian | 99 | 0.01 |
| Latvian | 91 | 0.01 |
| Albania | 84 | 0.01 |
| Nigerian | 81 | 0.01 |
| Israeli | 74 | 0.01 |
| Maltese | 65 | 0.01 |
| Belizean | 64 | 0.01 |
| Estonian | 63 | 0.01 |
| Macedonian | 60 | 0.01 |
| New Zealander | 57 | 0.01 |
| Syrian | 54 | 0.01 |
| Cajun | 53 | 0.01 |
| Trinidadian and Tobagonian | 50 | 0.01 |
| Iraqi | 39 | 0.004 |
| Assyrian/Chaldean/Syriac | 33 | 0.003 |
| Palestinian | 30 | 0.003 |
| Guyanese | 28 | 0.003 |
| Cypriot | 27 | 0.003 |
| Bermudan | 27 | 0.003 |
| Barbadian | 26 | 0.002 |
| Bahamian | 21 | 0.002 |
| Moroccan | 14 | 0.001 |
| Ghanaian | 14 | 0.001 |
| Zimbabwean | 9 | 0.001 |
| Afghan | 6 | 0.001 |