RANKING · 2020 CENSUS · 16 SHOWN OF 16

Highest Irish population share, Maine counties · 2020

Maine 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 16 counties in Maine that qualify, ranked against each other statewide. The median across all 16 is 14.9%.

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

01Cumberland County, MEME317,22219.6%−1.6 pts

02York County, MEME222,43418.4%−0.9 pts

03Lincoln County, MEME36,59517.5%−0.2 pts

04Piscataquis County, MEME17,40916.5%−0.1 pts

05Oxford County, MEME60,34616.2%+1.4 pts

06Penobscot County, MEME157,96716.2%−1.0 pts

07Kennebec County, MEME129,06716.0%−1.0 pts

08Hancock County, MEME57,17114.9%−0.3 pts

09Washington County, MEME31,33414.8%−2.1 pts

10Franklin County, MEME30,82414.7%+0.5 pts

11Sagadahoc County, MEME37,97914.6%−2.2 pts

12Androscoggin County, MEME116,48714.5%−1.0 pts

13Aroostook County, MEME66,60914.2%−3.2 pts

14Somerset County, MEME51,62014.0%−1.8 pts

15Knox County, MEME41,11713.9%−5.1 pts

16Waldo County, MEME40,69313.4%−3.8 pts

SHOWING 1–16 OF 16

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