Ranking of Maine Counties By Population with Irish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 222.26K people in Maine with Irish ancestry. Among all Maine counties, Cumberland County had the highest population with Irish ancestry (57.43K), followed by York County (38.49K), and Penobscot County (23.77K).
The chart and table below shows the top 10 counties with high number of people with Irish ancestry.
You can see similar information for other states and for other ancestry groups in Maine.
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Related Topics: Maine ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Maine Counties By Population with Irish Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Cumberland County | 57425 |
| 2 | York County | 38488 |
| 3 | Penobscot County | 23770 |
| 4 | Kennebec County | 19432 |
| 5 | Androscoggin County | 15417 |
| 6 | Aroostook County | 9365 |
| 7 | Oxford County | 9252 |
| 8 | Hancock County | 8373 |
| 9 | Somerset County | 7193 |
| 10 | Lincoln County | 5750 |
| 11 | Waldo County | 5611 |
| 12 | Knox County | 5453 |
| 13 | Sagadahoc County | 5298 |
| 14 | Washington County | 4312 |
| 15 | Franklin County | 4276 |
| 16 | Piscataquis County | 2840 |