Connecticut Educational Attainment and Per Gender for Ages 25 years and Above in 2021 (ACS-5Yrs)

Updated on August 19, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 2,515,137 Connecticut population aged 25 years and above, 225.02K of them (8.95%) had an education level of Less than High School Diploma; and 656.95K of them (26.12%) had an education level of High School Graduate or Equivalent.

The first chart and table below shows the population and percentages of the Connecticut population aged 25 years and above by educational attainment.

You can find the educational attainment information about the Connecticut male and female population below.

You can see similar information for other states and for the United States.

Percentage of Connecticut Population 25 years and above By Educational Attainment in 2021
Less HS Dipl.
HS Grad. or Equiv.
Some Coll. or AA
Bachelors+
Educational Attainment For Connecticut Population Aged 25 years and above in 2021
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Educational Level Population Percent (%)
Less than High School Diploma 225021 8.95
High School Graduate or Equivalent 656949 26.12
Some College or Associates Degree 613201 24.38
Bachelors or Higher 1019966 40.55

Male Population

Among the 1,211,183 Connecticut male population aged 25 years and above, 118.04K of them (9.75%) had an education level of Less than High School Diploma; and 333.29K of them (27.52%) had an education level of High School Graduate or Equivalent.

The chart and table below shows the population and percentages of the Connecticut male population aged 25 years and above by educational attainment.

Percentage of Connecticut Male Population 25 years and above By Educational Attainment in 2021
Less HS Dipl.
HS Grad. or Equiv.
Some Coll. or AA
Bachelors+
Educational Attainment For Connecticut Male Pop. Aged 25 years and above in 2021
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Educational Level Population Percent (%)
Less than High School Diploma 118042 9.75
High School Graduate or Equivalent 333289 27.52
Some College or Associates Degree 281631 23.25
Bachelors or Higher 478221 39.48

Female Population

Among the 1,303,954 Connecticut female population aged 25 years and above, 106.98K of them (8.20%) had an education level of Less than High School Diploma; and 323.66K of them (24.82%) had an education level of High School Graduate or Equivalent.

The chart and table below shows the population and percentages of the Connecticut female population aged 25 years and above by educational attainment.

Percentage of Connecticut Female Population 25 years and above By Educational Attainment in 2021
Less HS Dipl.
HS Grad. or Equiv.
Some Coll. or AA
Bachelors+
Educational Attainment For Connecticut Female Pop. Aged 25 years and above in 2021
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Educational Level Population Percent (%)
Less than High School Diploma 106979 8.20
High School Graduate or Equivalent 323660 24.82
Some College or Associates Degree 331570 25.43
Bachelors or Higher 541745 41.55