Connecticut Immigrant or Foreign-Born Population By County in 2021 (ACS-5Yrs)

Based on the US Census ACS-5Yrs estimates, in 2021, the total immigrant or foreign-born population in Connecticut was 534.22K which was 14.82% of Connecticut's population. Among all Connecticut counties, Fairfield had the highest immigrant population (213.55K) and immigrants constituted 22.33% of its population, followed by Hartford (pop: 138.49K, perc: 15.41%), and then New Haven (pop: 115.69K, perc: 13.38%).

On the other hand, the counties with the least number of immigrant population were: Windham (pop: 5.35K, perc: 4.59%), Tolland (pop: 10.86K, perc: 7.23%), and Middlesex (pop: 12.91K, perc: 7.85%),

The chart and table below shows the immigrant or foreign-born population of each county and the percentage of each county's population that are immigrants.

You can see similar information for other states and by state for the United States.