Ranking of Maine Counties By Percentage of 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 (16.38% of Maine population). Among all Maine counties, Cumberland County had the highest percentage of its population with Irish ancestry (19.09%), followed by York County (18.29%), and Piscataquis County (16.95%).
The chart and table below shows the top 10 counties with high percentage of its population having 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 Percentage of Population with Irish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Cumberland County | 19.09 |
| 2 | York County | 18.29 |
| 3 | Piscataquis County | 16.95 |
| 4 | Lincoln County | 16.40 |
| 5 | Oxford County | 16.01 |
| 6 | Kennebec County | 15.76 |
| 7 | Penobscot County | 15.62 |
| 8 | Hancock County | 15.11 |
| 9 | Franklin County | 14.50 |
| 9 | Sagadahoc County | 14.50 |
| 10 | Somerset County | 14.27 |
| 11 | Waldo County | 14.16 |
| 12 | Androscoggin County | 13.97 |
| 13 | Aroostook County | 13.92 |
| 14 | Washington County | 13.91 |
| 15 | Knox County | 13.46 |
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