Ranking of Connecticut Counties By Percentage of Population Aged 25 years and above with an Educational attainment of Bachelors or Higher in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of Connecticut (aged 25 years and above) who had an educational attainment of Bachelors or Higher was 40.55%. Among all Connecticut counties, Fairfield County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Bachelors or Higher (49.21%), followed by Middlesex County (43.62%), and Tolland County (42.82%).
The chart below shows the top 8 Connecticut counties, and the table below shows the ranking of all Connecticut counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: Connecticut ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Connecticut Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
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| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Fairfield County | 49.21 |
| 2 | Middlesex County | 43.62 |
| 3 | Tolland County | 42.82 |
| 4 | Hartford County | 39.22 |
| 5 | New Haven County | 36.65 |
| 6 | Litchfield County | 36.19 |
| 7 | New London County | 34.56 |
| 8 | Windham County | 24.41 |
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