The net cost of attending College of DuPage – the actual amount that students and their families are required to pay in a given year – varies depending on the candidate's annual family income. Generally, the higher the family income of the candidate, the higher is the net amount to be paid. So, it all essentially depends on the family income bracket of the student. At CD, the average net price is estimated to be around $6,388. The net price for students with an annual family income below $30,000 is reported to be around $5,478. For the individuals who come under the $30,001-$48,000 income category, the net cost is $6,455. On the other hand, an estimated net cost of $9,558 is charged for the $48,001-$75,000 income bracket, $12,206 for the $75,001-$110,000 income category, and $12,328 for an annual family income more than $110,000.