Deer Lodge 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 9.38K Deer Lodge County, MT population, 2.15K had Unclassified ancestry (22.93%), 1.99K had German ancestry (21.23%), and 1.96K had Irish ancestry (20.90%).
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.
Deer Lodge County, MT Population By Ancestry in 2021
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| Ancestry | Population | Percent of Pop. (%) |
|---|---|---|
| Unclassified | 2151 | 22.93 |
| German | 1991 | 21.23 |
| Irish | 1960 | 20.90 |
| Other Groups | 1304 | 13.90 |
| English | 970 | 10.34 |
| Norwegian | 563 | 6.00 |
| American | 539 | 5.75 |
| French (except Basque) | 469 | 5.00 |
| Italian | 358 | 3.82 |
| Polish | 269 | 2.87 |
| Swedish | 255 | 2.72 |
| European | 241 | 2.57 |
| French Canadian | 134 | 1.43 |
| Welsh | 130 | 1.39 |
| Scottish | 127 | 1.35 |
| Czech | 107 | 1.14 |
| Austrian | 106 | 1.13 |
| Scandinavian | 96 | 1.02 |
| Dutch | 82 | 0.87 |
| Scotch Irish | 79 | 0.84 |
| Subsaharan African | 61 | 0.65 |
| African | 61 | 0.65 |
| British | 60 | 0.64 |
| Finnish | 50 | 0.53 |
| Russian | 49 | 0.52 |
| Iranian | 47 | 0.50 |
| Croatian | 45 | 0.48 |
| Serbian | 41 | 0.44 |
| Eastern European | 36 | 0.38 |
| Yugoslavian | 33 | 0.35 |
| Danish | 25 | 0.27 |
| Lebanese | 21 | 0.22 |
| Swiss | 21 | 0.22 |
| Basque | 18 | 0.19 |
| Canadian | 12 | 0.13 |
| Pennsylvania German | 12 | 0.13 |
| Portuguese | 12 | 0.13 |
| Greek | 9 | 0.10 |
| Czechoslovakian | 7 | 0.08 |
| Northern European | 7 | 0.08 |
| Lithuanian | 5 | 0.05 |
| Slovak | 5 | 0.05 |