18 months after implementation of the PFA, rural pretrial supervision populations increased 240%, while pretrial jail populations fell 20% during the same period.

Overall, jail populations decreased by ~ 540 people while pretrial supervision populations increased by ~ 3,500 people.

Comparison of September 2022 to March 2023 (pre-PFA) vs. September 2024 to March 2025 (post-PFA)
Source: Loyola's Center for Criminal Justice analyses of monthly average daily jail population data provided by the Illinois Department of Corrections' Jail and Detention Standards Unit and obtained from the Lake County and Cook County jails, plus pretrial supervision populations from AOIC & OSPS. Pretrial supervision populations include those in the Cook County Sheriff's Electronic Monitoring program. Only counties/jails with complete data reported are included.Get the data