The Illinois facility with the most current inmates is Stateville Correctional Center with a total of at least 2,746 inmates.
Illinois Prison Populations in February 2020
| Institution | Population |
|---|---|
| Stateville Correctional Center | 2,746 |
| Menard Correctional Center | 2,183 |
| Dixon Correctional Center | 2,168 |
| Pinckneyville Correctional Center | 2,093 |
| Lawrence Correctional Center | 2,028 |
| Illinois River Correctional Center | 1,806 |
| Graham Correctional Center | 1,795 |
| Western Illinois Correctional Center | 1,658 |
| Sheridan Correctional Center | 1,655 |
| Hill Correctional Center | 1,608 |
| Danville Correctional Center | 1,598 |
| Shawnee Correctional Center | 1,550 |
| Logan Correctional Center | 1,549 |
| Centralia Correctional Center | 1,249 |
| Big Muddy River Correctional Center | 1,182 |
| Pontiac Correctional Center | 1,122 |
| East Moline Correctional Center | 1,099 |
| Robinson Correctional Center | 1,066 |
| Jacksonville Correctional Center | 1,065 |
| Taylorville Correctional Center | 982 |
| Vandalia Correctional Center | 972 |
| Lincoln Correctional Center | 959 |
| Vienna Correctional Center | 936 |
| Southwestern Illinois Correctional Center | 581 |
| Decatur Correctional Center | 535 |
| Kewanee Life Skills Re-Entry Center | 257 |
| Joliet Treatment Center | 213 |
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