CensusEasy
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 (2020 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.

Irish Americans: full group profile →
MassachusettsAll statesAll rankings
SAME RANKING BYCitiesStatesMetros
RELATEDLargest American populationHighest American population shareLargest Arab populationHighest Arab population shareLargest Egyptian populationHighest Egyptian population share
YEAR201020202024
Highest Irish population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPIRISH SHAREVS 2010
01Plymouth County, MAMA546,82930.0%−3.8 pts
02Barnstable County, MAMA233,53926.7%−0.3 pts
03Norfolk County, MAMA739,74925.5%−6.3 pts
04Dukes County, MAMA21,21921.3%+2.8 pts
05Essex County, MAMA826,65320.1%−3.2 pts
06Middlesex County, MAMA1,669,97919.3%−4.3 pts
07Worcester County, MAMA888,50218.5%−3.7 pts
08Franklin County, MAMA70,69818.4%−1.4 pts
09Hampshire County, MAMA164,06518.1%−4.1 pts
10Bristol County, MAMA593,64017.9%−1.4 pts
11Berkshire County, MAMA128,22417.5%−5.9 pts
12Nantucket County, MAMA14,75815.6%−3.2 pts
13Hampden County, MAMA464,33814.4%−3.0 pts
14Suffolk County, MAMA791,89113.0%−3.4 pts
SHOWING 1–14 OF 14
Download CSV (full list, 14 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS