The Illinois Department of Corrections (IDOC) is the code department of the Illinois state government that operates the adult state prison system. The IDOC is led by a director appointed by the Governor of Illinois, and its headquarters are in Springfield.
The IDOC was established in 1970, combining the state's prisons, juvenile centers, and parole services. The juvenile corrections system was split off into the Illinois Department of Juvenile Justice on July 1, 2006.
Crossroads and North Lawndale Adult Transition Centers are operated by the Safer Foundation. As of December 2009 , Thomson Correctional Center was in the process of being sold to the United States government.
Remains of the old Illinois State Prison
Illinois had the death penalty until it was abolished in 2011. Illinois last execution was Andrew Kokoraleis, on March 17, 1999. 
Pontiac Correctional Center housed the male death row, while Dwight Correctional Center housed the female death row. Prior to the January 11, 2003 commutation of death row sentences, male death row inmates were housed in Pontiac, Menard, and Tamms correctional centers. The execution chamber was at Tamms Correctional Center.
- ^ Uphoff, Judy Lee (2012). "The Governor and the Executive Branch". In Lind, Nancy S.; Rankin, Erik. Governing Illinois: Your Connection to State and Local Government (4th ed.). Center Publications, Center for State Policy and Leadership, University of Illinois at Springfield. pp. 78–79. ISBN 978-0-938943-28-0.
- ^ 20 ILCS 5/5-15
- ^ a b "IDOC Overview". Springfield, Illinois: Illinois Department of Corrections. Retrieved 2009-12-08.
- ^ "Contacting IDOC." Illinois Department of Corrections. Retrieved on December 7, 2009.
- ^ Smith, Matt."Illinois abolishes death penalty." CNN. March 9, 2011.
- ^ McKinney, Dave."." CHICAGO SUN TIMES. March 17, 1999.
- ^ "DOC Report Online." Illinois Department of Corrections. Retrieved on September 1, 2010.
- ^ "Tamms Closed Maximum Security Unit: Ten-Point Plan Brief." Illinois Department of Corrections. 3 (9/51). September 3, 2009. Retrieved on September 1, 2010.