Ranking of Connecticut Counties By Percentage of Population with Iranian Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 2.66K people in Connecticut with Iranian ancestry (0.07% of Connecticut population). Among all Connecticut counties, Tolland County had the highest percentage of its population with Iranian ancestry (0.14%), followed by Fairfield County (0.09%), and New Haven County (0.09%).

The chart and table below shows the top 8 counties with high percentage of its population having Iranian ancestry.

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

Data Source: US Census Bureau.
Ranking of Connecticut Counties By Percentage of Population with Iranian Ancestry in 2021
Tolland County
Fairfield County
New Haven County
Hartford County
New London County
Litchfield County
Middlesex County
Windham County
Ranking of Connecticut Counties By Percentage of Population with Iranian Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Tolland County 0.14
2 Fairfield County 0.09
2 New Haven County 0.09
3 Hartford County 0.08
4 New London County 0.04
5 Litchfield County 0.02
5 Middlesex County 0.02
6 Windham County 0.003