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This research bulletin provides an overview of forces that have influenced the number of felons under the supervision of Illinois' justice system, including crime and arrest trends, sentencing policies and practices related to probation and prison sentences.


The Research Briefing was written collaboratively by David E. Olson, Ph.D., and Donald Stemen, Ph.D., both from Loyola University Chicago; Kathy Saltmarsh, SPAC Executive Director; and Lindsay Bostwick, Jordan Boulger, Christine Devitt Westley, Cristin Monti Evans, and Mark Powers from the Illinois Criminal Justice Information Authority. Data used in the analyses to produce the briefing were obtained from reports published by the Illinois State Police (Crime in Illinois), the Administrative Office of the Illinois Courts (Annual Report of the Illinois Courts), analyses of data provided by the Illinois Department of Corrections, and analyses of data collected through the 2000 Illinois Probation Outcome Study.

This project was supported by Grant# 09-DJ-BX-0023 awarded to the Illinois Criminal Justice Information Authority by the Bureau of Justice Assistance, Office of Justice Programs, U.S. Department of Justice. Points of view or opinions contained within this document are those of the author and not necessarily represent the official position or policies of the U.S. Department of Justice or the Illinois Criminal Justice Information Authority.

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Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.