The Office of the Commissioner includes the Internal Affairs, Community Relations, Family Services, Victim Services, Media Relations, Planning and Research, and Information Technology.

The Bureau of Administrative Services consists of the Central Business Office, Central Offender Records, and Human Resources.

The Bureau of Correctional Healthcare Services manages and oversees the Department's contractual healthcare providers.

The Bureau of Prisons consists of James T. Vaughn Correctional Center, Sussex Correctional Institution, Baylor Women's Correctional Institution, Howard R. Young Correctional Institution, Transportation, Delaware Correctional Industries, Education, Facilities Maintenance, Food Services, Employee Development Center and Special Operations.

The Bureau of Community Corrections consists of Probation and Parole, House Arrest, New Castle County Community Corrections (Plummer Community Corrections Center and Hazel D. Plant Women's Treatment Facility), Sussex Community Corrections Center(Sussex Work Release and Sussex Violation of Probation Center), and Kent County Community Corrections (Morris Community Corrections Center and Central Violation of Probation Center).