Highest Irish population share, US cities · 2020
US cities 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. Richboro, Pennsylvania leads at 50.6%. 6,789 cities qualify in total. Cities with fewer than 5,000 residents are excluded. Massachusetts carries 11 of the top 25 entries.
UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES
Frequently asked
Which city has the highest irish share?
Richboro, Pennsylvania ranks #1 with 50.6% (2020 American Community Survey).
What are the top 5 cities by irish share?
Richboro, Pennsylvania, North Scituate, Massachusetts, Audubon, New Jersey, Glenside, Pennsylvania, Walpole, Massachusetts.
How many cities are in this ranking?
6,789 cities qualify after filtering for population minimums and data availability (minimum 5,000 residents). The ranking covers 2020 ACS 5-year data.
How is irish share measured?
Share of all residents who are Irish ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, American Community Survey 5-year estimates (2020).