Suffolk County, NY Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 1.52M Suffolk County, NY population, 378.70K had Other Groups ancestry (24.87%), 343.38K had Italian ancestry (22.55%), and 305.09K had Unclassified ancestry (20.03%).
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 New York counties, and for New York.
Data Source: US Census - ACS 5-Year Estimates (2021).
Suffolk County, NY Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Other Groups | 378703 | 24.87 |
| Italian | 343384 | 22.55 |
| Unclassified | 305090 | 20.03 |
| Irish | 261574 | 17.18 |
| German | 186736 | 12.26 |
| American | 82237 | 5.40 |
| Polish | 70527 | 4.63 |
| English | 67117 | 4.41 |
| West Indian (except Hispanic groups) | 28889 | 1.90 |
| Russian | 27793 | 1.83 |
| Greek | 19148 | 1.26 |
| French (except Basque) | 17179 | 1.13 |
| European | 14906 | 0.98 |
| Scottish | 12334 | 0.81 |
| Norwegian | 11703 | 0.77 |
| Haitian | 11331 | 0.74 |
| Jamaican | 10513 | 0.69 |
| Eastern European | 9607 | 0.63 |
| Subsaharan African | 9156 | 0.60 |
| Dutch | 8607 | 0.56 |
| Hungarian | 8364 | 0.55 |
| Swedish | 7897 | 0.52 |
| Ukrainian | 7614 | 0.50 |
| Austrian | 6347 | 0.42 |
| Turkish | 6060 | 0.40 |
| Portuguese | 5617 | 0.37 |
| Lithuanian | 5034 | 0.33 |
| Czech | 4968 | 0.33 |
| African | 4844 | 0.32 |
| British | 3971 | 0.26 |
| French Canadian | 3886 | 0.26 |
| Scotch Irish | 3532 | 0.23 |
| Trinidadian and Tobagonian | 3468 | 0.23 |
| Guyanese | 3467 | 0.23 |
| Danish | 3350 | 0.22 |
| Welsh | 3109 | 0.20 |
| Croatian | 2929 | 0.19 |
| Romanian | 2753 | 0.18 |
| Armenian | 2535 | 0.17 |
| West Indian | 2524 | 0.17 |
| Swiss | 2323 | 0.15 |
| Brazilian | 2291 | 0.15 |
| Nigerian | 2233 | 0.15 |
| Egyptian | 1951 | 0.13 |
| Scandinavian | 1951 | 0.13 |
| Czechoslovakian | 1945 | 0.13 |
| Canadian | 1855 | 0.12 |
| Maltese | 1614 | 0.11 |
| Lebanese | 1536 | 0.10 |
| Finnish | 1491 | 0.10 |
| Northern European | 1452 | 0.10 |
| Slovak | 1417 | 0.09 |
| Albania | 1351 | 0.09 |
| Iranian | 993 | 0.07 |
| Ghanaian | 993 | 0.07 |
| Israeli | 968 | 0.06 |
| Afghan | 918 | 0.06 |
| British West Indian | 864 | 0.06 |
| Belgian | 816 | 0.05 |
| Yugoslavian | 798 | 0.05 |
| Syrian | 780 | 0.05 |
| Jordanian | 617 | 0.04 |
| Belizean | 526 | 0.04 |
| Australian | 503 | 0.03 |
| Latvian | 468 | 0.03 |
| Slavic | 462 | 0.03 |
| Serbian | 450 | 0.03 |
| Moroccan | 408 | 0.03 |
| Barbadian | 404 | 0.03 |
| Slovene | 358 | 0.02 |
| Palestinian | 357 | 0.02 |
| Estonian | 352 | 0.02 |
| Celtic | 273 | 0.02 |
| Iraqi | 225 | 0.02 |
| Cypriot | 225 | 0.02 |
| South African | 216 | 0.01 |
| Arab | 152 | 0.01 |
| Icelander | 145 | 0.01 |
| Basque | 125 | 0.01 |
| Ethiopian | 122 | 0.01 |
| Bulgarian | 106 | 0.01 |
| Alsatian | 88 | 0.01 |
| Bahamian | 84 | 0.01 |
| Ugandan | 81 | 0.01 |
| Pennsylvania German | 73 | 0.01 |
| Bermudan | 48 | 0.00 |
| Luxembourger | 47 | 0.00 |
| Soviet Union | 45 | 0.00 |
| Macedonian | 43 | 0.00 |
| US Virgin Islander | 36 | 0.00 |
| Sudanese | 35 | 0.00 |
| Senegalese | 32 | 0.00 |
| Dutch West Indian | 27 | 0.00 |
| German Russian | 22 | 0.00 |
| Cape Verdean | 22 | 0.00 |
| Kenyan | 19 | 0.00 |
| Zimbabwean | 18 | 0.00 |
| New Zealander | 15 | 0.00 |
| Liberian | 14 | 0.00 |
| Carpatho Rusyn | 7 | 0.00 |