Ranking of Connecticut Cities and Places By Percentage of Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent 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 High School Graduate or Equivalent was 26.12%. Among all Connecticut cities and places with a population of 10K or higher, East Haven CDP had the highest percentage of its population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (46.08%), followed by Torrington city (38.92%), and Norwich city (38.14%).

The chart below shows the top 10 Connecticut cities and places (with a population of 10K+), and the table below shows the ranking of all Connecticut cities and places (with a population of 10K+).

You can see similar information for other educational attainments.

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

Ranking of Connecticut Cities and Places By Percentage of Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
East Haven CDP
Torrington city
Norwich city
Ansonia city
East Hartford CDP
Waterbury city
Windsor Locks CDP
Derby city
New Britain city
Meriden city
Ranking of Connecticut Cities and Places By Percentage of Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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Rank City of Place Percentage of Population (Aged 25yrs+) (%)
1 East Haven CDP 46.08
2 Torrington city 38.92
3 Norwich city 38.14
4 Ansonia city 38.11
4 East Hartford CDP 38.11
5 Waterbury city 36.56
6 Windsor Locks CDP 36.51
7 Derby city 36.32
8 New Britain city 35.51
9 Meriden city 35.40
10 West Haven city 35.14
11 Willimantic CDP 35.11
12 Hartford city 33.70
13 Wallingford Center CDP 33.64
14 Bridgeport city 32.35
15 Bristol city 32.34
16 Manchester CDP 31.47
17 New London city 30.69
18 New Haven city 30.22
19 Naugatuck borough 29.41
20 Middletown city 28.33
21 North Haven CDP 27.89
22 Bethel CDP 26.92
23 Shelton city 26.74
24 Danbury city 26.22
25 Newington CDP 24.00
26 Milford city (balance) 23.65
26 Wethersfield CDP 23.65
27 Trumbull Center CDP 23.16
28 Norwalk city 21.67
29 Stamford city 18.83
30 Orange CDP 16.87
31 Greenwich CDP 13.84
32 West Hartford CDP 12.58
33 Storrs CDP 8.79