The Illinois facility with the most current inmates is Menard Correctional Center with a total of at least 2,174 inmates.
One inmate is scheduled for supervised release, whether he is actually released on the scheduled date depends on a number of factors, such as behavior in prison, educational programs finished or other credit earning programs completed.
Illinois Prison Populations in September 2020
| Institution | Population |
|---|---|
| Menard Correctional Center | 2,174 |
| Stateville Correctional Center | 2,109 |
| Dixon Correctional Center | 1,931 |
| Lawrence Correctional Center | 1,824 |
| Pinckneyville Correctional Center | 1,720 |
| Western Illinois Correctional Center | 1,553 |
| Illinois River Correctional Center | 1,545 |
| Hill Correctional Center | 1,542 |
| Graham Correctional Center | 1,508 |
| Danville Correctional Center | 1,480 |
| Sheridan Correctional Center | 1,350 |
| Shawnee Correctional Center | 1,246 |
| Logan Correctional Center | 1,218 |
| Centralia Correctional Center | 1,200 |
| Pontiac Correctional Center | 1,090 |
| Big Muddy River Correctional Center | 1,081 |
| East Moline Correctional Center | 848 |
| Taylorville Correctional Center | 808 |
| Robinson Correctional Center | 754 |
| Jacksonville Correctional Center | 731 |
| Vienna Correctional Center | 697 |
| Lincoln Correctional Center | 664 |
| Vandalia Correctional Center | 587 |
| Southwestern Illinois Correctional Center | 438 |
| Decatur Correctional Center | 379 |
| Joliet Treatment Center | 220 |
| Kewanee Life Skills Re-Entry Center | 176 |
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