The Illinois facility with the most current inmates is Stateville Correctional Center with a total of at least 2,804 inmates.
Illinois Prison Populations in March 2020
| Institution | Population |
|---|---|
| Stateville Correctional Center | 2,804 |
| Menard Correctional Center | 2,201 |
| Dixon Correctional Center | 2,168 |
| Pinckneyville Correctional Center | 2,095 |
| Lawrence Correctional Center | 2,032 |
| Graham Correctional Center | 1,845 |
| Illinois River Correctional Center | 1,810 |
| Western Illinois Correctional Center | 1,658 |
| Sheridan Correctional Center | 1,656 |
| Hill Correctional Center | 1,609 |
| Danville Correctional Center | 1,599 |
| Logan Correctional Center | 1,575 |
| Shawnee Correctional Center | 1,555 |
| Centralia Correctional Center | 1,250 |
| Big Muddy River Correctional Center | 1,182 |
| Pontiac Correctional Center | 1,127 |
| East Moline Correctional Center | 1,101 |
| Robinson Correctional Center | 1,071 |
| Jacksonville Correctional Center | 1,066 |
| Taylorville Correctional Center | 982 |
| Vandalia Correctional Center | 978 |
| Lincoln Correctional Center | 959 |
| Vienna Correctional Center | 937 |
| Southwestern Illinois Correctional Center | 582 |
| Decatur Correctional Center | 535 |
| Kewanee Life Skills Re-Entry Center | 257 |
| Joliet Treatment Center | 213 |
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