Ranking of Delaware Counties By White Alone Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)
Updated on September 5, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the Delaware White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 36,480. Among all Delaware counties, New Castle County had the highest White Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (15,883), followed by Sussex County (11,706), and Kent County (8,891).
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, and for other races and ethnicities.
You can also see similar information for other states and for the United States.
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Related Topics: Delaware ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Delaware Counties By White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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| Rank | County | Number of People |
|---|---|---|
| 1 | New Castle County | 15883 |
| 2 | Sussex County | 11706 |
| 3 | Kent County | 8891 |