LaSalle 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 109.99K LaSalle County, IL population, 29.16K had German ancestry (26.52%), 24.41K had Unclassified ancestry (22.19%), and 20.73K had Irish ancestry (18.85%).
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.
LaSalle County, IL Population By Ancestry in 2021
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| Ancestry | Population | Percent of Pop. (%) |
|---|---|---|
| German | 29164 | 26.52 |
| Unclassified | 24409 | 22.19 |
| Irish | 20731 | 18.85 |
| Other Groups | 19873 | 18.07 |
| Italian | 9999 | 9.09 |
| English | 9415 | 8.56 |
| Polish | 7870 | 7.16 |
| Norwegian | 4587 | 4.17 |
| American | 4407 | 4.01 |
| French (except Basque) | 3012 | 2.74 |
| Swedish | 2157 | 1.96 |
| Slovak | 1672 | 1.52 |
| European | 1496 | 1.36 |
| Scottish | 1376 | 1.25 |
| Dutch | 1086 | 0.99 |
| Scotch Irish | 1052 | 0.96 |
| Czech | 794 | 0.72 |
| Slovene | 683 | 0.62 |
| Lithuanian | 599 | 0.55 |
| Danish | 493 | 0.45 |
| Hungarian | 483 | 0.44 |
| Greek | 425 | 0.39 |
| Russian | 386 | 0.35 |
| Welsh | 368 | 0.34 |
| Austrian | 327 | 0.30 |
| Belgian | 295 | 0.27 |
| Subsaharan African | 258 | 0.24 |
| French Canadian | 254 | 0.23 |
| Scandinavian | 254 | 0.23 |
| Romanian | 252 | 0.23 |
| African | 237 | 0.22 |
| British | 210 | 0.19 |
| Czechoslovakian | 174 | 0.16 |
| Egyptian | 172 | 0.16 |
| Lebanese | 171 | 0.16 |
| Portuguese | 167 | 0.15 |
| Croatian | 161 | 0.15 |
| Ukrainian | 144 | 0.13 |
| Slavic | 131 | 0.12 |
| Finnish | 114 | 0.10 |
| Canadian | 111 | 0.10 |
| Turkish | 107 | 0.10 |
| Eastern European | 100 | 0.09 |
| Yugoslavian | 93 | 0.09 |
| West Indian (except Hispanic groups) | 88 | 0.08 |
| Swiss | 85 | 0.08 |
| Luxembourger | 76 | 0.07 |
| Pennsylvania German | 75 | 0.07 |
| Latvian | 66 | 0.06 |
| Icelander | 53 | 0.05 |
| Jamaican | 45 | 0.04 |
| Haitian | 43 | 0.04 |
| Northern European | 41 | 0.04 |
| Brazilian | 24 | 0.02 |
| Nigerian | 21 | 0.02 |
| Macedonian | 19 | 0.02 |
| Iranian | 14 | 0.01 |
| Assyrian/Chaldean/Syriac | 11 | 0.01 |
| New Zealander | 11 | 0.01 |
| Israeli | 6 | 0.01 |
| Bulgarian | 5 | 0.01 |
| Serbian | 5 | 0.01 |
| Alsatian | 3 | 0.00 |
| Syrian | 3 | 0.00 |
| Australian | 3 | 0.00 |
| Soviet Union | 2 | 0.00 |