Will 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 696.40K Will County, IL population, 215.02K had Other Groups ancestry (30.88%), 126.04K had Unclassified ancestry (18.10%), and 122.80K had German ancestry (17.63%).
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.
Will County, IL Population By Ancestry in 2021
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| Ancestry | Population | Percent of Pop. (%) |
|---|---|---|
| Other Groups | 215016 | 30.88 |
| Unclassified | 126038 | 18.10 |
| German | 122795 | 17.63 |
| Irish | 99417 | 14.28 |
| Polish | 80195 | 11.52 |
| Italian | 64820 | 9.31 |
| English | 35644 | 5.12 |
| American | 16479 | 2.37 |
| Swedish | 13256 | 1.90 |
| Subsaharan African | 13196 | 1.90 |
| Dutch | 11974 | 1.72 |
| African | 9754 | 1.40 |
| French (except Basque) | 9709 | 1.39 |
| Czech | 9535 | 1.37 |
| Lithuanian | 9331 | 1.34 |
| European | 7380 | 1.06 |
| Scottish | 6330 | 0.91 |
| Norwegian | 6239 | 0.90 |
| Greek | 5249 | 0.75 |
| Croatian | 4844 | 0.70 |
| Slovak | 3764 | 0.54 |
| Hungarian | 3739 | 0.54 |
| Russian | 3544 | 0.51 |
| Scotch Irish | 3070 | 0.44 |
| Slovene | 2655 | 0.38 |
| Austrian | 2316 | 0.33 |
| Welsh | 1993 | 0.29 |
| Nigerian | 1989 | 0.29 |
| Danish | 1940 | 0.28 |
| West Indian (except Hispanic groups) | 1921 | 0.28 |
| French Canadian | 1915 | 0.28 |
| British | 1871 | 0.27 |
| Ukrainian | 1606 | 0.23 |
| Serbian | 1558 | 0.22 |
| Czechoslovakian | 1495 | 0.22 |
| Romanian | 1452 | 0.21 |
| Eastern European | 1165 | 0.17 |
| Yugoslavian | 1153 | 0.17 |
| Palestinian | 1076 | 0.16 |
| Scandinavian | 1051 | 0.15 |
| Belgian | 925 | 0.13 |
| Finnish | 893 | 0.13 |
| Swiss | 881 | 0.13 |
| Canadian | 782 | 0.11 |
| Egyptian | 763 | 0.11 |
| Jamaican | 754 | 0.11 |
| Lebanese | 639 | 0.09 |
| Macedonian | 618 | 0.09 |
| Northern European | 561 | 0.08 |
| Slavic | 551 | 0.08 |
| Ghanaian | 542 | 0.08 |
| Portuguese | 539 | 0.08 |
| Jordanian | 516 | 0.07 |
| Haitian | 492 | 0.07 |
| Arab | 484 | 0.07 |
| Iranian | 437 | 0.06 |
| Assyrian/Chaldean/Syriac | 365 | 0.05 |
| Moroccan | 297 | 0.04 |
| Trinidadian and Tobagonian | 287 | 0.04 |
| Armenian | 277 | 0.04 |
| Luxembourger | 271 | 0.04 |
| Syrian | 258 | 0.04 |
| Afghan | 245 | 0.04 |
| Albania | 216 | 0.03 |
| Bulgarian | 214 | 0.03 |
| Ethiopian | 194 | 0.03 |
| Turkish | 192 | 0.03 |
| Latvian | 177 | 0.03 |
| West Indian | 177 | 0.03 |
| Brazilian | 167 | 0.02 |
| Guyanese | 136 | 0.02 |
| Belizean | 121 | 0.02 |
| Pennsylvania German | 93 | 0.01 |
| South African | 88 | 0.01 |
| Iraqi | 86 | 0.01 |
| Israeli | 80 | 0.01 |
| New Zealander | 80 | 0.01 |
| Kenyan | 65 | 0.01 |
| Maltese | 59 | 0.01 |
| Celtic | 38 | 0.01 |
| Ugandan | 36 | 0.01 |
| Barbadian | 36 | 0.01 |
| Australian | 34 | 0.01 |
| German Russian | 31 | 0.00 |
| Dutch West Indian | 31 | 0.00 |
| Liberian | 23 | 0.00 |
| Cajun | 22 | 0.00 |
| Icelander | 22 | 0.00 |
| US Virgin Islander | 22 | 0.00 |
| Alsatian | 15 | 0.00 |
| Estonian | 8 | 0.00 |
| Carpatho Rusyn | 7 | 0.00 |
| Basque | 6 | 0.00 |
| British West Indian | 6 | 0.00 |