RANKING · 2024 ACS · 16 SHOWN OF 16

Highest Irish population share, Maine counties

Maine counties ranked by the share of all residents who are Irish ancestry (2024 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 15.2%. Biggest climber in the top 100 since 2020: Waldo County, ME, up 12 places to #4.

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, MEME317,22219.2%−2.0 pts

02York County, MEME222,43418.9%−0.5 pts

03▲5Hancock County, MEME57,17116.9%+1.7 pts

04▲12Waldo County, MEME40,69316.2%−0.9 pts

05▲2Kennebec County, MEME129,06715.5%−1.4 pts

06Penobscot County, MEME157,96715.4%−1.8 pts

07▲7Somerset County, MEME51,62015.4%−0.5 pts

08▼3Oxford County, MEME60,34615.2%+0.4 pts

09▲2Sagadahoc County, MEME37,97914.9%−1.9 pts

10▼6Piscataquis County, MEME17,40914.7%−1.9 pts

11▼8Lincoln County, MEME36,59514.6%−3.1 pts

12Androscoggin County, MEME116,48714.6%−0.9 pts

13▼3Franklin County, MEME30,82414.3%+0.1 pts

14▲1Knox County, MEME41,11713.4%−5.5 pts

15▼2Aroostook County, MEME66,60913.2%−4.2 pts

16▼7Washington County, MEME31,33413.1%−3.8 pts

SHOWING 1–16 OF 16

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES