Ranking of Connecticut Counties By Percentage of 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 (0.36% of Connecticut population). Among all Connecticut counties, Litchfield County had the highest percentage of its population with Welsh ancestry (0.61%), followed by New London County (0.52%), and Tolland County (0.49%).

The chart and table below shows the top 8 counties with high percentage of its population having 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 Percentage of Population with Welsh Ancestry in 2021
Litchfield County
New London County
Tolland County
Middlesex County
Windham County
Fairfield County
Hartford County
New Haven County
Ranking of Connecticut Counties By Percentage of Population with Welsh Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Litchfield County 0.61
2 New London County 0.52
3 Tolland County 0.49
4 Middlesex County 0.37
5 Windham County 0.34
6 Fairfield County 0.33
7 Hartford County 0.32
8 New Haven County 0.31