Ranking of Connecticut Counties By 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. Among all Connecticut counties, Fairfield County had the highest population with Other Groups ancestry (293.26K), followed by Hartford County (288.85K), and New Haven County (271.47K).

The chart and table below shows the top 8 counties with high number of people with 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 Population with Other Groups Ancestry in 2021
Fairfield County
Hartford County
New Haven County
New London County
Middlesex County
Litchfield County
Tolland County
Windham County
Ranking of Connecticut Counties By Population with Other Groups Ancestry in 2021
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Rank County Population
1 Fairfield County 293263
2 Hartford County 288851
3 New Haven County 271466
4 New London County 59609
5 Middlesex County 27856
6 Litchfield County 23516
7 Tolland County 21648
8 Windham County 20703