Illinois Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 12.82M Illinois population, 4.48M had Other Groups ancestry (34.92%), 2.60M had Unclassified ancestry (20.25%), and 2.15M had German ancestry (16.78%).
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 states, Illinois counties, congressional districts, and the United States.
NB: People could belong to one or more ancestry groups.
Related Topics: Illinois ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates (2021).
Illinois Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Other Groups | 4477034 | 34.92 |
| Unclassified | 2596930 | 20.25 |
| German | 2151981 | 16.78 |
| Irish | 1397290 | 10.90 |
| Polish | 825037 | 6.44 |
| English | 767416 | 5.99 |
| Italian | 719470 | 5.61 |
| American | 449237 | 3.50 |
| Swedish | 236844 | 1.85 |
| French (except Basque) | 200730 | 1.57 |
| European | 169110 | 1.32 |
| Scottish | 143048 | 1.12 |
| Norwegian | 141310 | 1.10 |
| Dutch | 138437 | 1.08 |
| Subsaharan African | 129295 | 1.01 |
| Russian | 105957 | 0.83 |
| Czech | 92655 | 0.72 |
| Greek | 89107 | 0.70 |
| Lithuanian | 74215 | 0.58 |
| African | 70473 | 0.55 |
| Scotch Irish | 68314 | 0.53 |
| Ukrainian | 54259 | 0.42 |
| British | 49134 | 0.38 |
| Welsh | 47720 | 0.37 |
| Hungarian | 44210 | 0.35 |
| Eastern European | 42464 | 0.33 |
| Danish | 41163 | 0.32 |
| West Indian (except Hispanic groups) | 38168 | 0.30 |
| Croatian | 37695 | 0.29 |
| Austrian | 35115 | 0.27 |
| Romanian | 34958 | 0.27 |
| Slovak | 32766 | 0.26 |
| Swiss | 32746 | 0.26 |
| French Canadian | 31698 | 0.25 |
| Scandinavian | 28313 | 0.22 |
| Nigerian | 27353 | 0.21 |
| Belgian | 25280 | 0.20 |
| Serbian | 24530 | 0.19 |
| Yugoslavian | 17933 | 0.14 |
| Palestinian | 17261 | 0.14 |
| Bulgarian | 17200 | 0.13 |
| Jamaican | 16327 | 0.13 |
| Finnish | 16236 | 0.13 |
| Arab | 15081 | 0.12 |
| Assyrian/Chaldean/Syriac | 14512 | 0.11 |
| Albania | 14279 | 0.11 |
| Czechoslovakian | 14251 | 0.11 |
| Northern European | 13633 | 0.11 |
| Canadian | 13267 | 0.10 |
| Slovene | 13030 | 0.10 |
| Lebanese | 11962 | 0.09 |
| Iranian | 11180 | 0.09 |
| Jordanian | 10952 | 0.09 |
| Portuguese | 10422 | 0.08 |
| Haitian | 9425 | 0.07 |
| Egyptian | 9010 | 0.07 |
| Armenian | 8674 | 0.07 |
| Turkish | 7768 | 0.06 |
| Syrian | 7442 | 0.06 |
| Iraqi | 7366 | 0.06 |
| Brazilian | 7046 | 0.06 |
| Ethiopian | 6517 | 0.05 |
| Macedonian | 6221 | 0.05 |
| Ghanaian | 6131 | 0.05 |
| Belizean | 5993 | 0.05 |
| Slavic | 5352 | 0.04 |
| Luxembourger | 5262 | 0.04 |
| Latvian | 5094 | 0.04 |
| Moroccan | 4709 | 0.04 |
| Israeli | 4197 | 0.03 |
| Pennsylvania German | 3973 | 0.03 |
| Australian | 3003 | 0.02 |
| West Indian | 2932 | 0.02 |
| South African | 2369 | 0.02 |
| Sudanese | 2073 | 0.02 |
| Trinidadian and Tobagonian | 1673 | 0.01 |
| Kenyan | 1510 | 0.01 |
| Afghan | 1277 | 0.01 |
| Guyanese | 1262 | 0.01 |
| Estonian | 1070 | 0.01 |
| Maltese | 967 | 0.01 |
| Liberian | 954 | 0.01 |
| Somali | 944 | 0.01 |
| Barbadian | 909 | 0.01 |
| Icelander | 871 | 0.01 |
| Celtic | 778 | 0.01 |
| Senegalese | 667 | 0.01 |
| Ugandan | 619 | 0.01 |
| German Russian | 578 | 0.01 |
| Bahamian | 477 | 0.00 |
| British West Indian | 469 | 0.00 |
| Alsatian | 454 | 0.00 |
| Cajun | 448 | 0.00 |
| Basque | 420 | 0.00 |
| New Zealander | 394 | 0.00 |
| Zimbabwean | 378 | 0.00 |
| Cypriot | 327 | 0.00 |
| Cape Verdean | 250 | 0.00 |
| Dutch West Indian | 205 | 0.00 |
| Soviet Union | 196 | 0.00 |
| Sierra Leonean | 191 | 0.00 |
| US Virgin Islander | 191 | 0.00 |
| Bermudan | 165 | 0.00 |
| Carpatho Rusyn | 146 | 0.00 |