RANKING · 2020 CENSUS · 16 SHOWN OF 16

Highest Scotch-Irish population share, Maine counties · 2020

Maine counties ranked by the share of all residents who are Scotch-Irish ancestry (2023 American Community Survey). A concentration measure: Scotch-Irish residents as a percentage of total population. This list covers the 16 counties in Maine that qualify, ranked against each other statewide.

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

YEAR2010 2020 2024

RANKPLACESTATEPOPSCOTCH-IRISH SHAREVS 2000

01Knox County, MEME41,1172.7%–

02Waldo County, MEME40,6931.8%–

03Cumberland County, MEME317,2221.8%–

04Somerset County, MEME51,6201.7%–

05Hancock County, MEME57,1711.7%–

06Sagadahoc County, MEME37,9791.6%–

07Androscoggin County, MEME116,4871.6%–

08Washington County, MEME31,3341.6%–

09Aroostook County, MEME66,6091.5%–

10Oxford County, MEME60,3461.4%–

11Lincoln County, MEME36,5951.4%–

12Kennebec County, MEME129,0671.4%–

13Franklin County, MEME30,8241.3%–

14Penobscot County, MEME157,9671.3%–

15Piscataquis County, MEME17,4091.2%–

16York County, MEME222,4341.0%–

SHOWING 1–16 OF 16

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES