Chester County, PA Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 531.70K Chester County, PA population, 112.33K had Irish ancestry (21.13%), 108.19K had Other Groups ancestry (20.35%), and 106.95K had German ancestry (20.11%).
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 Pennsylvania counties, and for Pennsylvania.
Data Source: US Census - ACS 5-Year Estimates (2021).
Chester County, PA Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Irish | 112331 | 21.13 |
| Other Groups | 108188 | 20.35 |
| German | 106951 | 20.11 |
| Unclassified | 93471 | 17.58 |
| Italian | 74844 | 14.08 |
| English | 66879 | 12.58 |
| Polish | 25796 | 4.85 |
| American | 17171 | 3.23 |
| Scottish | 11162 | 2.10 |
| French (except Basque) | 10051 | 1.89 |
| European | 9619 | 1.81 |
| Welsh | 7561 | 1.42 |
| Dutch | 6435 | 1.21 |
| Russian | 6269 | 1.18 |
| Scotch Irish | 5771 | 1.09 |
| Pennsylvania German | 5037 | 0.95 |
| British | 4559 | 0.86 |
| Ukrainian | 4356 | 0.82 |
| Swedish | 3987 | 0.75 |
| Hungarian | 3979 | 0.75 |
| Greek | 3402 | 0.64 |
| Norwegian | 3369 | 0.63 |
| Subsaharan African | 3330 | 0.63 |
| Slovak | 3037 | 0.57 |
| Lithuanian | 2773 | 0.52 |
| Eastern European | 2685 | 0.51 |
| Swiss | 2669 | 0.50 |
| Czech | 2147 | 0.40 |
| French Canadian | 2027 | 0.38 |
| African | 1857 | 0.35 |
| Austrian | 1853 | 0.35 |
| Canadian | 1741 | 0.33 |
| Portuguese | 1473 | 0.28 |
| Scandinavian | 1371 | 0.26 |
| West Indian (except Hispanic groups) | 1279 | 0.24 |
| Armenian | 1204 | 0.23 |
| Northern European | 891 | 0.17 |
| Danish | 889 | 0.17 |
| Jamaican | 739 | 0.14 |
| Lebanese | 687 | 0.13 |
| Iranian | 652 | 0.12 |
| Romanian | 634 | 0.12 |
| Czechoslovakian | 557 | 0.11 |
| Belgian | 548 | 0.10 |
| Turkish | 535 | 0.10 |
| Brazilian | 533 | 0.10 |
| Egyptian | 499 | 0.09 |
| Latvian | 476 | 0.09 |
| Croatian | 450 | 0.09 |
| Syrian | 375 | 0.07 |
| Slovene | 350 | 0.07 |
| Nigerian | 350 | 0.07 |
| Slavic | 347 | 0.07 |
| Finnish | 339 | 0.06 |
| Albania | 305 | 0.06 |
| Australian | 297 | 0.06 |
| Maltese | 272 | 0.05 |
| Iraqi | 265 | 0.05 |
| Kenyan | 244 | 0.05 |
| Trinidadian and Tobagonian | 236 | 0.04 |
| Guyanese | 235 | 0.04 |
| South African | 196 | 0.04 |
| Cape Verdean | 189 | 0.04 |
| Bulgarian | 183 | 0.03 |
| Serbian | 182 | 0.03 |
| Yugoslavian | 174 | 0.03 |
| West Indian | 161 | 0.03 |
| Haitian | 129 | 0.02 |
| Alsatian | 114 | 0.02 |
| Moroccan | 97 | 0.02 |
| Icelander | 93 | 0.02 |
| Palestinian | 87 | 0.02 |
| Afghan | 73 | 0.01 |
| Israeli | 73 | 0.01 |
| Cajun | 69 | 0.01 |
| Celtic | 66 | 0.01 |
| Sierra Leonean | 51 | 0.01 |
| Carpatho Rusyn | 46 | 0.01 |
| Liberian | 44 | 0.01 |
| Luxembourger | 37 | 0.01 |
| Ugandan | 29 | 0.01 |
| Estonian | 28 | 0.01 |
| Jordanian | 23 | 0.00 |
| Barbadian | 19 | 0.00 |
| German Russian | 17 | 0.00 |
| Belizean | 17 | 0.00 |
| Macedonian | 15 | 0.00 |
| New Zealander | 12 | 0.00 |
| Ethiopian | 12 | 0.00 |
| Assyrian/Chaldean/Syriac | 10 | 0.00 |
| Cypriot | 10 | 0.00 |
| Basque | 8 | 0.00 |
| Ghanaian | 5 | 0.00 |
| Bahamian | 5 | 0.00 |
| Arab | 3 | 0.00 |