Ranking of Connecticut Cities and Places By Percentage of Population with Irish Ancestry in 2021

Based on the US Census ACS-5Yrs estimates, in 2021, there were 528.98K people in Connecticut with Irish ancestry (14.67% of Connecticut population). Among all Connecticut cities and places with a population of at least 10K, Windsor Locks CDP had the highest percentage of its population with Irish ancestry (21.40%), followed by Milford city (balance) (20.91%), and North Haven CDP (20.41%).

The chart and table below shows the top 10 cities with high percentage of its population having Irish ancestry.

You can see similar information for other states and for other ancestry groups in Connecticut.