Iroquois County, IL Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 27.36K Iroquois County, IL population, 8.65K had German ancestry (31.61%), 6.41K had Unclassified ancestry (23.42%), and 4.10K had Other Groups ancestry (14.98%).
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 Illinois counties, and for Illinois.
NB: People could belong to one or more ancestry groups.
Data Source: US Census Bureau.
Iroquois County, IL Population By Ancestry in 2021
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| Ancestry | Population | Percent of Pop. (%) |
|---|---|---|
| German | 8650 | 31.61 |
| Unclassified | 6407 | 23.42 |
| Other Groups | 4100 | 14.98 |
| Irish | 3991 | 14.59 |
| English | 2648 | 9.68 |
| French (except Basque) | 2104 | 7.69 |
| American | 1601 | 5.85 |
| Italian | 1091 | 3.99 |
| Dutch | 767 | 2.80 |
| Polish | 697 | 2.55 |
| French Canadian | 516 | 1.89 |
| Scottish | 388 | 1.42 |
| Swedish | 359 | 1.31 |
| European | 283 | 1.03 |
| Norwegian | 278 | 1.02 |
| Welsh | 214 | 0.78 |
| Scotch Irish | 182 | 0.67 |
| Scandinavian | 179 | 0.65 |
| Hungarian | 172 | 0.63 |
| Swiss | 170 | 0.62 |
| Danish | 165 | 0.60 |
| Lithuanian | 135 | 0.49 |
| British | 120 | 0.44 |
| Greek | 102 | 0.37 |
| Czech | 92 | 0.34 |
| Russian | 71 | 0.26 |
| Belgian | 69 | 0.25 |
| Albania | 49 | 0.18 |
| Eastern European | 34 | 0.12 |
| Slovak | 33 | 0.12 |
| West Indian (except Hispanic groups) | 31 | 0.11 |
| Barbadian | 31 | 0.11 |
| Subsaharan African | 23 | 0.08 |
| Austrian | 22 | 0.08 |
| Australian | 19 | 0.07 |
| Macedonian | 19 | 0.07 |
| Cajun | 18 | 0.07 |
| Croatian | 17 | 0.06 |
| German Russian | 16 | 0.06 |
| Czechoslovakian | 14 | 0.05 |
| Slovene | 14 | 0.05 |
| Nigerian | 12 | 0.04 |
| African | 11 | 0.04 |
| Portuguese | 10 | 0.04 |
| Canadian | 9 | 0.03 |
| Yugoslavian | 9 | 0.03 |
| Pennsylvania German | 8 | 0.03 |
| Ukrainian | 7 | 0.03 |
| Romanian | 6 | 0.02 |