Penobscot County, ME Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 152.21K Penobscot County, ME population, 39.19K had Unclassified ancestry (25.75%), 28.69K had English ancestry (18.85%), and 23.77K had Irish ancestry (15.62%).
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 Maine counties, and for Maine.
NB: People could belong to one or more ancestry groups.
Data Source: US Census Bureau.
Penobscot County, ME Population By Ancestry in 2021
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| Ancestry | Population | Percent of Pop. (%) |
|---|---|---|
| Unclassified | 39194 | 25.75 |
| English | 28685 | 18.85 |
| Irish | 23770 | 15.62 |
| French (except Basque) | 20656 | 13.57 |
| Other Groups | 19306 | 12.68 |
| American | 11652 | 7.66 |
| German | 10511 | 6.91 |
| French Canadian | 8070 | 5.30 |
| Italian | 6804 | 4.47 |
| Scottish | 6133 | 4.03 |
| Polish | 2661 | 1.75 |
| Swedish | 2272 | 1.49 |
| Scotch Irish | 1957 | 1.29 |
| European | 1775 | 1.17 |
| Welsh | 1407 | 0.92 |
| British | 1312 | 0.86 |
| Canadian | 1158 | 0.76 |
| Dutch | 1123 | 0.74 |
| Norwegian | 760 | 0.50 |
| Portuguese | 732 | 0.48 |
| Russian | 591 | 0.39 |
| Subsaharan African | 584 | 0.38 |
| Scandinavian | 535 | 0.35 |
| Eastern European | 477 | 0.31 |
| Danish | 414 | 0.27 |
| Greek | 404 | 0.27 |
| West Indian (except Hispanic groups) | 377 | 0.25 |
| Hungarian | 354 | 0.23 |
| Lithuanian | 334 | 0.22 |
| African | 312 | 0.21 |
| Jamaican | 295 | 0.19 |
| Finnish | 238 | 0.16 |
| Lebanese | 237 | 0.16 |
| Ukrainian | 207 | 0.14 |
| Northern European | 203 | 0.13 |
| Czech | 190 | 0.13 |
| Brazilian | 184 | 0.12 |
| Iranian | 174 | 0.11 |
| Nigerian | 146 | 0.10 |
| Slovak | 142 | 0.09 |
| Arab | 133 | 0.09 |
| Austrian | 123 | 0.08 |
| Armenian | 95 | 0.06 |
| Somali | 93 | 0.06 |
| Swiss | 75 | 0.05 |
| Pennsylvania German | 68 | 0.05 |
| Cypriot | 65 | 0.04 |
| Egyptian | 57 | 0.04 |
| Romanian | 57 | 0.04 |
| Haitian | 47 | 0.03 |
| Cajun | 46 | 0.03 |
| Celtic | 42 | 0.03 |
| Latvian | 42 | 0.03 |
| Czechoslovakian | 41 | 0.03 |
| Turkish | 39 | 0.03 |
| Bulgarian | 38 | 0.03 |
| Slavic | 36 | 0.02 |
| Syrian | 34 | 0.02 |
| Croatian | 34 | 0.02 |
| Belgian | 32 | 0.02 |
| Iraqi | 30 | 0.02 |
| Trinidadian and Tobagonian | 29 | 0.02 |
| Australian | 23 | 0.02 |
| New Zealander | 21 | 0.01 |
| Albania | 19 | 0.01 |
| Icelander | 19 | 0.01 |
| Ethiopian | 17 | 0.01 |
| Estonian | 14 | 0.01 |
| South African | 11 | 0.01 |
| Assyrian/Chaldean/Syriac | 7 | 0.01 |
| Guyanese | 6 | 0.00 |
| British West Indian | 6 | 0.00 |
| West Indian | 6 | 0.00 |
| Luxembourger | 5 | 0.00 |
| Yugoslavian | 2 | 0.00 |
| Sudanese | 1 | 0.00 |