Joliet Treatment Center is a state correctional facility in Joliet, Illinois, run by the Illinois Department of Corrections. Federal facility data from 2020 put its capacity at about 486 beds.
Joliet Treatment Center Address and Phone
- Facility type
- State correctional facility
- Address
- 2848 West McDonough, Joliet, IL 60436Open in Google Maps
- Main phone
- (815) 730-4400
- Operated by
- Illinois Department of Corrections
- County
- Will County
How to Find an Inmate at Joliet Treatment Center
People serving state sentences are listed in the state's offender search, not on county jail rosters. Search by last and first name, or by the state inmate number if you have it; the result shows where the person is held now, which can change after a transfer.
Visiting, Mail and Phone Calls
Visiting days, visitor approval, dress rules and the mailing format for letters are set by the Illinois Department of Corrections and can change at short notice. Read the official facility page and call ahead before you travel.
Jails and Police Near Joliet Treatment Center
Anyone arrested near Joliet is booked into the county jail first; a state facility only receives people after sentencing, commitment or transfer.
Other State Correctional Facilities in Illinois
Open status checked against the official idoc.illinois.gov facility listing in November 2026. Address and phone come from that listing or, where it shows none, from the federal HIFLD prison dataset. This page lists no inmates.