Ranking of Connecticut Counties By Percentage of Population with Other Groups Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 1.01M people in Connecticut with Other Groups ancestry (27.93% of Connecticut population). Among all Connecticut counties, Hartford County had the highest percentage of its population with Other Groups ancestry (32.14%), followed by New Haven County (31.39%), and Fairfield County (30.66%).

The chart and table below shows the top 8 counties with high percentage of its population having Other Groups 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 Other Groups Ancestry in 2021
Hartford County
New Haven County
Fairfield County
New London County
Windham County
Middlesex County
Tolland County
Litchfield County
Ranking of Connecticut Counties By Percentage of Population with Other Groups Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Hartford County 32.14
2 New Haven County 31.39
3 Fairfield County 30.66
4 New London County 22.15
5 Windham County 17.77
6 Middlesex County 16.93
7 Tolland County 14.42
8 Litchfield County 12.70