Ranking of Connecticut Counties By Population with Welsh Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 13.00K people in Connecticut with Welsh ancestry. Among all Connecticut counties, Fairfield County had the highest population with Welsh ancestry (3.18K), followed by Hartford County (2.92K), and New Haven County (2.64K).

The chart and table below shows the top 8 counties with high number of people with Welsh 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 Welsh 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 Welsh Ancestry in 2021
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Rank County Population
1 Fairfield County 3178
2 Hartford County 2916
3 New Haven County 2644
4 New London County 1388
5 Litchfield County 1124
6 Tolland County 737
7 Middlesex County 612
8 Windham County 396