Plymouth County, MA Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 527.60K Plymouth County, MA population, 154.56K had Irish ancestry (29.29%), 93.67K had Unclassified ancestry (17.75%), and 74.09K had Italian ancestry (14.04%).
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 Massachusetts counties, and for Massachusetts.
Data Source: US Census - ACS 5-Year Estimates (2021).
Plymouth County, MA Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Irish | 154557 | 29.29 |
| Unclassified | 93668 | 17.75 |
| Italian | 74092 | 14.04 |
| English | 68917 | 13.06 |
| Other Groups | 61415 | 11.64 |
| German | 30266 | 5.74 |
| Subsaharan African | 28234 | 5.35 |
| Cape Verdean | 25300 | 4.80 |
| American | 22565 | 4.28 |
| French (except Basque) | 21013 | 3.98 |
| Portuguese | 19557 | 3.71 |
| West Indian (except Hispanic groups) | 18238 | 3.46 |
| Haitian | 15320 | 2.90 |
| French Canadian | 14133 | 2.68 |
| Polish | 14129 | 2.68 |
| Scottish | 13799 | 2.62 |
| Swedish | 11329 | 2.15 |
| Greek | 5160 | 0.98 |
| European | 4892 | 0.93 |
| Scotch Irish | 4808 | 0.91 |
| Brazilian | 4115 | 0.78 |
| Canadian | 4045 | 0.77 |
| Lithuanian | 3650 | 0.69 |
| Russian | 3263 | 0.62 |
| Norwegian | 2990 | 0.57 |
| Lebanese | 2771 | 0.53 |
| Dutch | 2548 | 0.48 |
| British | 2047 | 0.39 |
| Finnish | 2006 | 0.38 |
| Welsh | 1616 | 0.31 |
| Eastern European | 1587 | 0.30 |
| Jamaican | 1568 | 0.30 |
| Armenian | 1369 | 0.26 |
| African | 1209 | 0.23 |
| Hungarian | 1135 | 0.22 |
| Ukrainian | 984 | 0.19 |
| Danish | 901 | 0.17 |
| Nigerian | 848 | 0.16 |
| Scandinavian | 730 | 0.14 |
| Albania | 699 | 0.13 |
| Austrian | 583 | 0.11 |
| Swiss | 551 | 0.10 |
| Northern European | 533 | 0.10 |
| Czech | 473 | 0.09 |
| Kenyan | 469 | 0.09 |
| West Indian | 423 | 0.08 |
| Latvian | 420 | 0.08 |
| Barbadian | 398 | 0.08 |
| Belgian | 366 | 0.07 |
| Slovak | 329 | 0.06 |
| Trinidadian and Tobagonian | 326 | 0.06 |
| Romanian | 314 | 0.06 |
| Syrian | 308 | 0.06 |
| British West Indian | 292 | 0.06 |
| Czechoslovakian | 288 | 0.06 |
| Moroccan | 275 | 0.05 |
| Croatian | 255 | 0.05 |
| Guyanese | 222 | 0.04 |
| Bulgarian | 187 | 0.04 |
| Turkish | 184 | 0.04 |
| Icelander | 165 | 0.03 |
| Slavic | 157 | 0.03 |
| Cajun | 154 | 0.03 |
| Ethiopian | 120 | 0.02 |
| Serbian | 114 | 0.02 |
| Palestinian | 112 | 0.02 |
| Liberian | 112 | 0.02 |
| Pennsylvania German | 97 | 0.02 |
| Slovene | 97 | 0.02 |
| Celtic | 89 | 0.02 |
| US Virgin Islander | 88 | 0.02 |
| Australian | 87 | 0.02 |
| South African | 80 | 0.02 |
| Ghanaian | 74 | 0.01 |
| Yugoslavian | 72 | 0.01 |
| Egyptian | 70 | 0.01 |
| Iranian | 68 | 0.01 |
| Arab | 59 | 0.01 |
| Israeli | 56 | 0.01 |
| Estonian | 45 | 0.01 |
| Maltese | 24 | 0.01 |
| Zimbabwean | 21 | 0.00 |
| Alsatian | 15 | 0.00 |
| Assyrian/Chaldean/Syriac | 13 | 0.00 |
| Carpatho Rusyn | 11 | 0.00 |
| Sierra Leonean | 9 | 0.00 |
| Basque | 8 | 0.00 |
| Macedonian | 8 | 0.00 |
| Luxembourger | 7 | 0.00 |
| Somali | 7 | 0.00 |
| Senegalese | 6 | 0.00 |
| Sudanese | 5 | 0.00 |