RANKING · 2020 CENSUS · 24 SHOWN OF 24

Highest Irish population share, Maryland counties · 2020

Maryland counties ranked by the share of all residents who are Irish ancestry (2020 American Community Survey). A concentration measure: Irish residents as a percentage of total population. This list covers the 24 counties in Maryland that qualify, ranked against each other statewide. The median across all 24 is 13.7%.

Irish Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH SHAREVS 2010

01Carroll County, MDMD176,67718.1%−1.0 pts

02Cecil County, MDMD107,13117.7%−3.7 pts

03Worcester County, MDMD54,45917.2%−1.0 pts

04Talbot County, MDMD38,23816.4%−1.9 pts

05Harford County, MDMD266,44615.7%−4.1 pts

06Queen Anne's County, MDMD54,44815.6%−6.8 pts

07St. Mary's County, MDMD116,69215.5%−1.9 pts

08Kent County, MDMD19,56515.1%−0.4 pts

09Garrett County, MDMD28,37015.1%+3.8 pts

10Calvert County, MDMD94,48415.0%−2.6 pts

11Anne Arundel County, MDMD603,38014.2%−4.4 pts

12Frederick County, MDMD302,88313.7%−3.8 pts

13Allegany County, MDMD66,84812.6%−2.0 pts

14Caroline County, MDMD34,11612.2%−3.3 pts

15Baltimore County, MDMD847,65011.7%−2.9 pts

16Washington County, MDMD157,73110.9%−3.2 pts

17Wicomico County, MDMD106,89910.4%−3.2 pts

18Howard County, MDMD339,18310.4%−3.5 pts

19Dorchester County, MDMD33,6289.1%−2.0 pts

20Montgomery County, MDMD1,074,5827.9%−1.6 pts

21Charles County, MDMD176,5937.4%−3.4 pts

22Somerset County, MDMD24,9736.8%−1.5 pts

23Baltimore, MDMD569,9975.6%−0.8 pts

24Prince George's County, MDMD970,3742.6%−1.1 pts

SHOWING 1–24 OF 24

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS