Ranking of Connecticut Counties By Population Aged 25 years and above with an Educational attainment of Some College or Associates Degree in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the population of Connecticut (aged 25 years and above) who had an educational attainment of Some College or Associates Degree was 613,201. Among all Connecticut counties, Hartford County had the highest population (aged 25 years and above) with an educational attainment of Some College or Associates Degree (158,752), followed by New Haven County (145,546), and Fairfield County (131,954).
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 Population (Aged 25yrs+) with an Educational Attainment of Some College or Associates Degree in 2021
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| Rank | County | Number of People |
|---|---|---|
| 1 | Hartford County | 158752 |
| 2 | New Haven County | 145546 |
| 3 | Fairfield County | 131954 |
| 4 | New London County | 56768 |
| 5 | Litchfield County | 38925 |
| 6 | Middlesex County | 31813 |
| 7 | Tolland County | 24787 |
| 8 | Windham County | 24656 |
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