Ranking of Maryland 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 593.04K people in Maryland with Irish ancestry (9.65% of Maryland population). Among all Maryland counties, Carroll County had the highest percentage of its population with Irish ancestry (17.77%), followed by Talbot County (17.48%), and Cecil County (17.37%).
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 Maryland.
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Related Topics: Maryland ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Maryland Counties By Percentage of Population with Irish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Carroll County | 17.77 |
| 2 | Talbot County | 17.48 |
| 3 | Cecil County | 17.37 |
| 4 | Worcester County | 16.42 |
| 5 | Queen Anne's County | 15.52 |
| 6 | Harford County | 14.99 |
| 7 | St. Mary's County | 14.67 |
| 8 | Calvert County | 14.14 |
| 9 | Kent County | 14.07 |
| 10 | Frederick County | 14.00 |
| 11 | Garrett County | 13.61 |
| 12 | Anne Arundel County | 13.47 |
| 13 | Allegany County | 12.18 |
| 14 | Caroline County | 11.96 |
| 15 | Baltimore County | 11.45 |
| 16 | Washington County | 11.19 |
| 17 | Wicomico County | 10.77 |
| 18 | Howard County | 10.62 |
| 19 | Dorchester County | 8.36 |
| 20 | Montgomery County | 7.84 |
| 21 | Charles County | 7.10 |
| 22 | Baltimore city | 5.68 |
| 23 | Somerset County | 5.58 |
| 24 | Prince George's County | 2.60 |
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