Ranking of Connecticut Counties By Population with English Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 306.53K people in Connecticut with English ancestry. Among all Connecticut counties, Fairfield County had the highest population with English ancestry (70.89K), followed by Hartford County (67.54K), and New Haven County (60.99K).

The chart and table below shows the top 8 counties with high number of people with English 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 English 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 English Ancestry in 2021
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Rank County Population
1 Fairfield County 70894
2 Hartford County 67539
3 New Haven County 60992
4 New London County 33738
5 Litchfield County 23597
6 Middlesex County 18802
7 Tolland County 17202
8 Windham County 13763