Ranking of Connecticut Counties By Percentage of Population with American Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 132.32K people in Connecticut with American ancestry (3.67% of Connecticut population). Among all Connecticut counties, Middlesex County had the highest percentage of its population with American ancestry (4.54%), followed by Fairfield County (4.34%), and Litchfield County (4.09%).
The chart and table below shows the top 8 counties with high percentage of its population having American ancestry.
You can see similar information for other states and for other ancestry groups in Connecticut.
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Related Topics: Connecticut ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Connecticut Counties By Percentage of Population with American Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Middlesex County | 4.54 |
| 2 | Fairfield County | 4.34 |
| 3 | Litchfield County | 4.09 |
| 4 | Hartford County | 3.77 |
| 5 | New London County | 3.40 |
| 6 | Tolland County | 3.05 |
| 7 | New Haven County | 2.90 |
| 8 | Windham County | 2.67 |
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