

A focus on "some college, no degree" can improve state college attainment rates. More: Delaware PDF
| County | Percent w/college degree | Number w/college degree | Total population (ages 25-34) | < 9th grade | 9th-12th grade, no diploma | High school grad/GED | Some college, no degree | Associate's degree | Bachelor's degree | Graduate degree |
| TOTAL | 36.9% | 39,789 | 107,935 | 3,465 | 10,334 | 30,707 | 23,640 | 7,699 | 23,117 | 8,973 |
| New Castle | 42.3% | 31,091 | 73,526 | 1,740 | 5,809 | 19,170 | 15,716 | 5,162 | 18,606 | 7,323 |
| Kent | 26.7% | 4,467 | 16,704 | 549 | 2,001 | 5,251 | 4,436 | 1,190 | 2,427 | 850 |
| Sussex | 23.9% | 4,231 | 17,705 | 1,176 | 2,524 | 6,286 | 3,488 | 1,347 | 2,084 | 800 |