Fairfield County, CT Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 956.45K Fairfield County, CT population, 293.26K had Other Groups ancestry (30.66%), 151.52K had Unclassified ancestry (15.84%), and 150.17K had Italian ancestry (15.70%).
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 Connecticut counties, and for Connecticut.
Data Source: US Census - ACS 5-Year Estimates (2021).
Fairfield County, CT Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Other Groups | 293263 | 30.66 |
| Unclassified | 151524 | 15.84 |
| Italian | 150172 | 15.70 |
| Irish | 131244 | 13.72 |
| German | 75823 | 7.93 |
| English | 70894 | 7.41 |
| Polish | 44498 | 4.65 |
| American | 41508 | 4.34 |
| West Indian (except Hispanic groups) | 34541 | 3.61 |
| Jamaican | 18596 | 1.94 |
| Russian | 17904 | 1.87 |
| French (except Basque) | 16666 | 1.74 |
| Portuguese | 14037 | 1.47 |
| Brazilian | 13896 | 1.45 |
| Hungarian | 13485 | 1.41 |
| Scottish | 12787 | 1.34 |
| European | 11424 | 1.19 |
| Greek | 11376 | 1.19 |
| Haitian | 11091 | 1.16 |
| Subsaharan African | 9283 | 0.97 |
| Swedish | 9030 | 0.94 |
| French Canadian | 8263 | 0.86 |
| Eastern European | 8147 | 0.85 |
| Slovak | 7636 | 0.80 |
| British | 6824 | 0.71 |
| Dutch | 6539 | 0.68 |
| Ukrainian | 5620 | 0.59 |
| Scotch Irish | 4898 | 0.51 |
| Norwegian | 4897 | 0.51 |
| Lithuanian | 4594 | 0.48 |
| Austrian | 4059 | 0.42 |
| African | 3715 | 0.39 |
| Czech | 3690 | 0.39 |
| Romanian | 3511 | 0.37 |
| Danish | 3237 | 0.34 |
| Welsh | 3178 | 0.33 |
| Albania | 2944 | 0.31 |
| Canadian | 2935 | 0.31 |
| Lebanese | 2823 | 0.30 |
| Swiss | 2525 | 0.26 |
| Armenian | 1744 | 0.18 |
| Croatian | 1727 | 0.18 |
| Ghanaian | 1653 | 0.17 |
| West Indian | 1630 | 0.17 |
| Trinidadian and Tobagonian | 1466 | 0.15 |
| Scandinavian | 1462 | 0.15 |
| Northern European | 1404 | 0.15 |
| Czechoslovakian | 1196 | 0.13 |
| British West Indian | 1076 | 0.11 |
| Turkish | 1041 | 0.11 |
| Syrian | 1002 | 0.11 |
| Nigerian | 994 | 0.10 |
| Cape Verdean | 915 | 0.10 |
| Iranian | 873 | 0.09 |
| Barbadian | 862 | 0.09 |
| Finnish | 783 | 0.08 |
| Moroccan | 719 | 0.08 |
| Egyptian | 694 | 0.07 |
| Arab | 689 | 0.07 |
| Australian | 688 | 0.07 |
| Bulgarian | 677 | 0.07 |
| Yugoslavian | 665 | 0.07 |
| Israeli | 584 | 0.06 |
| Serbian | 556 | 0.06 |
| Guyanese | 527 | 0.06 |
| Slovene | 507 | 0.05 |
| Belgian | 494 | 0.05 |
| Slavic | 486 | 0.05 |
| Latvian | 473 | 0.05 |
| South African | 466 | 0.05 |
| Palestinian | 461 | 0.05 |
| Macedonian | 408 | 0.04 |
| Belizean | 370 | 0.04 |
| Afghan | 357 | 0.04 |
| Estonian | 354 | 0.04 |
| Iraqi | 199 | 0.02 |
| Icelander | 199 | 0.02 |
| US Virgin Islander | 192 | 0.02 |
| Jordanian | 180 | 0.02 |
| Celtic | 148 | 0.02 |
| Cypriot | 142 | 0.02 |
| Bahamian | 130 | 0.01 |
| Pennsylvania German | 103 | 0.01 |
| New Zealander | 91 | 0.01 |
| Basque | 84 | 0.01 |
| Kenyan | 78 | 0.01 |
| Liberian | 78 | 0.01 |
| Carpatho Rusyn | 75 | 0.01 |
| Sierra Leonean | 66 | 0.01 |
| Bermudan | 52 | 0.01 |
| Maltese | 47 | 0.01 |
| Ethiopian | 47 | 0.01 |
| Ugandan | 41 | 0.00 |
| Dutch West Indian | 40 | 0.00 |
| Alsatian | 18 | 0.00 |
| Zimbabwean | 15 | 0.00 |
| Cajun | 7 | 0.00 |
| Luxembourger | 7 | 0.00 |