Ranking of Connecticut Counties By Population with British Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 19.47K people in Connecticut with British ancestry. Among all Connecticut counties, Fairfield County had the highest population with British ancestry (6.82K), followed by Hartford County (4.12K), and New Haven County (3.21K).

The chart and table below shows the top 8 counties with high number of people with British 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 British Ancestry in 2021
Fairfield County
Hartford County
New Haven County
New London County
Litchfield County
Middlesex County
Tolland County
Windham County
Ranking of Connecticut Counties By Population with British Ancestry in 2021
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Rank County Population
1 Fairfield County 6824
2 Hartford County 4122
3 New Haven County 3210
4 New London County 1635
5 Litchfield County 1311
6 Middlesex County 961
7 Tolland County 777
8 Windham County 632