Ranking of Delaware 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 Delaware (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 30.40%. Among all Delaware cities and places with a population of 10K or higher, Brookside CDP had the highest percentage of its population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (36.53%), followed by Wilmington city (36.42%), and Smyrna town (31.52%).

The chart below shows the top 10 Delaware cities and places (with a population of 10K+), and the table below shows the ranking of all Delaware 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 Delaware Cities and Places By Percentage of Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
Brookside CDP
Wilmington city
Smyrna town
Dover city
Bear CDP
Glasgow CDP
Milford city
Middletown town
Pike Creek Valley CDP
Newark city
Ranking of Delaware 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 Brookside CDP 36.53
2 Wilmington city 36.42
3 Smyrna town 31.52
4 Dover city 30.20
5 Bear CDP 28.34
6 Glasgow CDP 27.44
7 Milford city 26.52
8 Middletown town 22.74
9 Pike Creek Valley CDP 19.85
10 Newark city 16.05
11 Hockessin CDP 10.17