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

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 240.39K people in Connecticut with Polish ancestry (6.67% of Connecticut population). Among all Connecticut counties, Middlesex County had the highest percentage of its population with Polish ancestry (10.48%), followed by Hartford County (8.78%), and Tolland County (8.10%).

The chart and table below shows the top 8 counties with high percentage of its population having Polish 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 Polish Ancestry in 2021
Middlesex County
Hartford County
Tolland County
Windham County
Litchfield County
New London County
New Haven County
Fairfield County
Ranking of Connecticut Counties By Percentage of Population with Polish Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Middlesex County 10.48
2 Hartford County 8.78
3 Tolland County 8.10
4 Windham County 7.25
5 Litchfield County 7.19
6 New London County 7.05
7 New Haven County 5.42
8 Fairfield County 4.65