Ranking of Connecticut Counties By Population with European Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 36.64K people in Connecticut with European ancestry. Among all Connecticut counties, Fairfield County had the highest population with European ancestry (11.42K), followed by Hartford County (7.70K), and New Haven County (6.68K).

The chart and table below shows the top 8 counties with high number of people with European 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 European Ancestry in 2021
Fairfield County
Hartford County
New Haven County
New London County
Litchfield County
Tolland County
Middlesex County
Windham County
Ranking of Connecticut Counties By Population with European Ancestry in 2021
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Rank County Population
1 Fairfield County 11424
2 Hartford County 7695
3 New Haven County 6680
4 New London County 2978
5 Litchfield County 2776
6 Tolland County 2275
7 Middlesex County 2143
8 Windham County 673