The Washington State Developmental Disabilities Council is committed to addressing the pressing issue of individuals with Intellectual and Developmental Disabilities (I/DD) residing in restrictive settings such as jails, prisons, and hospitals. The Incarceration Research Project was awarded to University of Washington: University Center for Excellence in Developmental Disabilities (UCEDD). It resulted in a report that reviews laws at state and national levels addressing criminal justice involvement of people with IDD, documents programs, practices, and initiatives related to criminal justice and people with IDD and provides recommendations for future policies and programs. To the extent possible with the available literature, the report will highlight the disproportionate criminal justice involvement of racial and ethnic communities and/or rural or other historically marginalized or underserved IDD communities and the intersectionality of identity and systems.