Connecticut Population By Ancestry in 2021 (ACS-5Yrs)
Updated on April 15, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 3.61M Connecticut population, 1.01M had Other Groups ancestry (27.93%), 596.88K had Unclassified ancestry (16.56%), and 584.13K had Italian ancestry (16.20%).
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 states.
NB: People could belong to one or more ancestry groups.
Related Topics: Connecticut ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Connecticut Population By Ancestry in 2021
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| Ancestry | Population | Percent of Population (%) |
|---|---|---|
| Other Groups | 1006912 | 27.93 |
| Unclassified | 596879 | 16.56 |
| Italian | 584128 | 16.20 |
| Irish | 528983 | 14.67 |
| English | 306527 | 8.50 |
| German | 296788 | 8.23 |
| Polish | 240390 | 6.67 |
| French (except Basque) | 157233 | 4.36 |
| American | 132323 | 3.67 |
| West Indian (except Hispanic groups) | 93395 | 2.59 |
| French Canadian | 85189 | 2.36 |
| Jamaican | 59682 | 1.66 |
| Scottish | 54921 | 1.52 |
| Russian | 49404 | 1.37 |
| Swedish | 48410 | 1.34 |
| Portuguese | 46482 | 1.29 |
| Subsaharan African | 37591 | 1.04 |
| European | 36644 | 1.02 |
| Hungarian | 31631 | 0.88 |
| Greek | 28959 | 0.80 |
| Lithuanian | 26099 | 0.72 |
| Dutch | 23609 | 0.66 |
| Brazilian | 22856 | 0.63 |
| Eastern European | 20509 | 0.57 |
| Ukrainian | 20303 | 0.56 |
| Haitian | 19843 | 0.55 |
| British | 19472 | 0.54 |
| Norwegian | 17342 | 0.48 |
| Slovak | 17295 | 0.48 |
| Scotch Irish | 17282 | 0.48 |
| African | 16840 | 0.47 |
| Canadian | 13909 | 0.39 |
| Welsh | 12995 | 0.36 |
| Albania | 12563 | 0.35 |
| Austrian | 12377 | 0.34 |
| Danish | 10176 | 0.28 |
| Czech | 10147 | 0.28 |
| Lebanese | 9234 | 0.26 |
| Swiss | 8044 | 0.22 |
| Romanian | 6777 | 0.19 |
| Scandinavian | 6362 | 0.18 |
| West Indian | 6224 | 0.17 |
| Ghanaian | 5451 | 0.15 |
| Finnish | 4979 | 0.14 |
| Armenian | 4971 | 0.14 |
| Yugoslavian | 4457 | 0.12 |
| Czechoslovakian | 4426 | 0.12 |
| Guyanese | 4019 | 0.11 |
| Northern European | 3978 | 0.11 |
| Trinidadian and Tobagonian | 3909 | 0.11 |
| Cape Verdean | 3646 | 0.10 |
| Nigerian | 3621 | 0.10 |
| Croatian | 3501 | 0.10 |
| Turkish | 3130 | 0.09 |
| Egyptian | 2784 | 0.08 |
| Iranian | 2663 | 0.07 |
| Moroccan | 2448 | 0.07 |
| British West Indian | 2448 | 0.07 |
| Syrian | 2445 | 0.07 |
| Belgian | 2293 | 0.06 |
| Arab | 2115 | 0.06 |
| Israeli | 1952 | 0.05 |
| Latvian | 1757 | 0.05 |
| Afghan | 1743 | 0.05 |
| Barbadian | 1734 | 0.05 |
| Slavic | 1563 | 0.04 |
| Serbian | 1377 | 0.04 |
| Australian | 1208 | 0.03 |
| Slovene | 1199 | 0.03 |
| Estonian | 1179 | 0.03 |
| Palestinian | 1108 | 0.03 |
| Ethiopian | 1008 | 0.03 |
| Bulgarian | 960 | 0.03 |
| South African | 896 | 0.03 |
| Macedonian | 695 | 0.02 |
| Pennsylvania German | 639 | 0.02 |
| Senegalese | 584 | 0.02 |
| Jordanian | 562 | 0.02 |
| Belizean | 528 | 0.02 |
| Liberian | 504 | 0.01 |
| Celtic | 499 | 0.01 |
| Sudanese | 497 | 0.01 |
| Icelander | 417 | 0.01 |
| Kenyan | 392 | 0.01 |
| Bahamian | 357 | 0.01 |
| Assyrian/Chaldean/Syriac | 351 | 0.01 |
| Iraqi | 342 | 0.01 |
| Ugandan | 322 | 0.01 |
| US Virgin Islander | 317 | 0.01 |
| Basque | 299 | 0.01 |
| Somali | 285 | 0.01 |
| Carpatho Rusyn | 213 | 0.01 |
| Cajun | 209 | 0.01 |
| New Zealander | 203 | 0.01 |
| Alsatian | 194 | 0.01 |
| Maltese | 170 | 0.01 |
| Dutch West Indian | 155 | 0.004 |
| Cypriot | 153 | 0.004 |
| Bermudan | 107 | 0.003 |
| Sierra Leonean | 99 | 0.003 |
| Luxembourger | 68 | 0.002 |
| German Russian | 62 | 0.002 |
| Soviet Union | 31 | 0.001 |
| Zimbabwean | 15 | 0.000 |
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