Ranking of Delaware Counties By 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 population of Delaware (aged 25 years and above) who had an educational attainment of Bachelors or Higher was 232,374. Among all Delaware counties, New Castle County had the highest population (aged 25 years and above) with an educational attainment of Bachelors or Higher (147,694), followed by Sussex County (53,641), and Kent County (31,039).

The chart below shows the top 3 Delaware counties, and the table below shows the ranking of all Delaware counties.

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 Counties By Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
New Castle County
Sussex County
Kent County
Ranking of Delaware Counties By Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
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Rank County Number of People
1 New Castle County 147694
2 Sussex County 53641
3 Kent County 31039