Jefferson County, ID Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 30.43K Jefferson County, ID population, 9.20K had English ancestry (30.23%), 6.89K had Unclassified ancestry (22.64%), and 5.08K had Other Groups ancestry (16.69%).
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 Idaho counties, and for Idaho.
Data Source: US Census - ACS 5-Year Estimates (2021).
Jefferson County, ID Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| English | 9197 | 30.23 |
| Unclassified | 6889 | 22.64 |
| Other Groups | 5079 | 16.69 |
| German | 4471 | 14.69 |
| American | 2509 | 8.25 |
| Irish | 1502 | 4.94 |
| European | 1497 | 4.92 |
| Swedish | 1443 | 4.74 |
| Italian | 951 | 3.13 |
| Scottish | 900 | 2.96 |
| Norwegian | 855 | 2.81 |
| Swiss | 803 | 2.64 |
| Dutch | 754 | 2.48 |
| Welsh | 748 | 2.46 |
| Danish | 594 | 1.95 |
| French (except Basque) | 489 | 1.61 |
| Scotch Irish | 266 | 0.87 |
| Scandinavian | 213 | 0.70 |
| Ukrainian | 189 | 0.62 |
| British | 174 | 0.57 |
| Polish | 141 | 0.46 |
| Hungarian | 133 | 0.44 |
| French Canadian | 90 | 0.30 |
| Northern European | 80 | 0.26 |
| Czech | 70 | 0.23 |
| Celtic | 50 | 0.16 |
| Yugoslavian | 48 | 0.16 |
| Russian | 47 | 0.15 |
| Greek | 41 | 0.14 |
| Portuguese | 27 | 0.09 |
| Croatian | 16 | 0.05 |
| Basque | 15 | 0.05 |
| Icelander | 8 | 0.03 |
| Eastern European | 7 | 0.02 |
| Serbian | 7 | 0.02 |
| Finnish | 6 | 0.02 |
| Luxembourger | 4 | 0.01 |
| Canadian | 3 | 0.01 |
| Czechoslovakian | 2 | 0.01 |