RANKING · 2020 CENSUS · 14 SHOWN OF 14

Highest Irish population share, Massachusetts counties · 2020

Massachusetts counties ranked by the share of all residents who are Irish ancestry (2023 American Community Survey). A concentration measure: Irish residents as a percentage of total population. This list covers the 14 counties in Massachusetts that qualify, ranked against each other statewide.

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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 2000

01Plymouth County, MAMA546,82930.0%–

02Barnstable County, MAMA233,53926.7%–

03Norfolk County, MAMA739,74925.5%–

04Dukes County, MAMA21,21921.3%–

05Essex County, MAMA826,65320.1%–

06Middlesex County, MAMA1,669,97919.3%–

07Worcester County, MAMA888,50218.5%–

08Franklin County, MAMA70,69818.4%–

09Hampshire County, MAMA164,06518.1%–

10Bristol County, MAMA593,64017.9%–

11Berkshire County, MAMA128,22417.5%–

12Nantucket County, MAMA14,75815.6%–

13Hampden County, MAMA464,33814.4%–

14Suffolk County, MAMA791,89113.0%–

SHOWING 1–14 OF 14

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