The Illinois facility with the most current inmates is Stateville Correctional Center with a total of at least 2,684 inmates.
Illinois Prison Populations in January 2020
| Institution | Population |
|---|---|
| Stateville Correctional Center | 2,684 |
| Dixon Correctional Center | 2,168 |
| Menard Correctional Center | 2,165 |
| Pinckneyville Correctional Center | 2,088 |
| Lawrence Correctional Center | 2,024 |
| Illinois River Correctional Center | 1,803 |
| Graham Correctional Center | 1,742 |
| Western Illinois Correctional Center | 1,656 |
| Sheridan Correctional Center | 1,648 |
| Hill Correctional Center | 1,606 |
| Danville Correctional Center | 1,584 |
| Shawnee Correctional Center | 1,534 |
| Logan Correctional Center | 1,509 |
| Centralia Correctional Center | 1,238 |
| Big Muddy River Correctional Center | 1,176 |
| Pontiac Correctional Center | 1,121 |
| East Moline Correctional Center | 1,098 |
| Jacksonville Correctional Center | 1,056 |
| Robinson Correctional Center | 1,053 |
| Taylorville Correctional Center | 981 |
| Lincoln Correctional Center | 955 |
| Vandalia Correctional Center | 949 |
| Vienna Correctional Center | 926 |
| Southwestern Illinois Correctional Center | 577 |
| Decatur Correctional Center | 527 |
| Kewanee Life Skills Re-Entry Center | 257 |
| Joliet Treatment Center | 212 |
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