Ranking of Maryland 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 593.04K people in Maryland with Irish ancestry. Among all Maryland counties, Baltimore County had the highest population with Irish ancestry (97.38K), followed by Montgomery County (82.87K), and Anne Arundel County (78.70K).
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 Maryland.
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Related Topics: Maryland ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Maryland Counties By Population with Irish Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Baltimore County | 97384 |
| 2 | Montgomery County | 82873 |
| 3 | Anne Arundel County | 78698 |
| 4 | Harford County | 38844 |
| 5 | Frederick County | 37449 |
| 6 | Howard County | 34961 |
| 7 | Baltimore city | 33625 |
| 8 | Carroll County | 30599 |
| 9 | Prince George's County | 24938 |
| 10 | Cecil County | 17954 |
| 11 | Washington County | 17221 |
| 12 | St. Mary's County | 16607 |
| 13 | Calvert County | 13081 |
| 14 | Charles County | 11722 |
| 15 | Wicomico County | 11120 |
| 16 | Worcester County | 8593 |
| 17 | Allegany County | 8365 |
| 18 | Queen Anne's County | 7712 |
| 19 | Talbot County | 6557 |
| 20 | Caroline County | 3974 |
| 21 | Garrett County | 3942 |
| 22 | Kent County | 2721 |
| 23 | Dorchester County | 2716 |
| 24 | Somerset County | 1386 |