RANKING · 2010 CENSUS · 14 SHOWN OF 14

Highest Irish population share, Massachusetts counties · 2010

Massachusetts counties ranked by the share of all residents who are Irish ancestry (2010 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. The median across all 14 is 22.2%.

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 –

01Plymouth County, MAMA546,82933.7%–

02Norfolk County, MAMA739,74931.8%–

03Barnstable County, MAMA233,53927.0%–

04Middlesex County, MAMA1,669,97923.5%–

05Berkshire County, MAMA128,22423.5%–

06Essex County, MAMA826,65323.3%–

07Worcester County, MAMA888,50222.2%–

08Hampshire County, MAMA164,06522.2%–

09Franklin County, MAMA70,69819.8%–

10Bristol County, MAMA593,64019.2%–

11Nantucket County, MAMA14,75818.8%–

12Dukes County, MAMA21,21918.5%–

13Hampden County, MAMA464,33817.4%–

14Suffolk County, MAMA791,89116.4%–

SHOWING 1–14 OF 14

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