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Joliet Treatment Center

Dr. Catherine Larry, Warden

Facility Data

Joliet Treatment Center
*Operational Capacity: 486
Multi-Security Multi-Disciplinary Treatment Facility (Adult Male)
**Population: 214
Average Annual Cost Per Offender: $177,082 (FY20)

*Operational capacity is the maximum amount of beds a facility has; to include all health care, crisis, segregation, protective custody, isolation, R&Cs, and future beds that are down for repair. Data reflects a bed space capacity census that was conducted in CY19.

**As of 1/1/21


The facility is on Administrative Quarantine with no visits. Phone calls and video visits will continue as normal.

Visitor ADA Accommodations

IDOC Visitation Rules and Information—please review before visiting

The Illinois Department of Corrections is implementing a multi-phase plan to resume in-person visits as safely as possible. The number of visitors per two-hour time slot are limited to ensure social distancing measures are closely followed. Phase two, which takes effect June 2021, loosens restrictions for visitors and incarcerated people who are fully vaccinated. At this time, each incarcerated person is permitted three visits per month. To visit Joliet Treatment Center, you must sign up at least seven days in advance.

Facility Address

2848 West McDonough
Joliet, IL 60436

Phone: 815-730-4400
Fax: 815-730-4401 ​

Facility Information

The Joliet Treatment Center will serve as a multi-disciplinary treatment facility for convicted adult male felons with severe mental illness. The adult multiple-security (including maximum-security) facility will provide treatment to high-risk, high-need inmates with a stepdown structured format to enable their return to general population. The 486-bed facility will be comprised of a treatment capacity of 422 and a minimum-security general population capacity of 64. Following renovation completion, the Joliet Treatment Center will consist of two behavior modification units, four residential treatment units and a minimum-security unit. The facility consists of a total of 20 buildings, which comprise more than 222,058 square feet. The facility sits on a 55-acre site, with 50 acres enclosed by fencing.​