RANKING · 2020 CENSUS · 16 SHOWN OF 16

Largest Irish population, Maine counties · 2020

Maine counties ranked by the number of residents who are Irish ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 16 counties in Maine that qualify, ranked against each other statewide.

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 POPULATIONVS 2010

01Cumberland County, MEME317,22257,674−3%

02York County, MEME222,43437,967−0%

03Penobscot County, MEME157,96724,500−7%

04Kennebec County, MEME129,06719,520−6%

05Androscoggin County, MEME116,48715,679−6%

06Aroostook County, MEME66,6099,559−24%

07Oxford County, MEME60,3469,380+9%

08Hancock County, MEME57,1718,179−1%

09Somerset County, MEME51,6207,090−14%

10Lincoln County, MEME36,5956,029−2%

11Knox County, MEME41,1175,533−27%

12Waldo County, MEME40,6935,307−20%

13Sagadahoc County, MEME37,9795,208−13%

14Washington County, MEME31,3344,654−17%

15Franklin County, MEME30,8244,405+1%

16Piscataquis County, MEME17,4092,780−4%

SHOWING 1–16 OF 16

Download CSV (full list, 16 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS