Of the state's 24 adult prisons and holding facilities, the Department of Correction contracts with six outside agences for inmate beds. The largest privately run prison is the New Castle Correctional Facility with more than 2,400 beds. The others are mostly work-release agencies.
Nearly a quarter of the 28,000 adult inmates held at the end of 2010 came from Marion County, the state's most populous county. Next were Allen and Elkhart counties, with each providing 10 percent of the prison population. The largest prisons, those holding more than 3,000 inmates, are Westville Correctional in LaPorte County and Miami Correctional in Miami County.
| No. | Name | Security | Inmates |
| 1 | Indiana State Prison | Maximum | 2,286 |
| 2 | South Bend Community Re-Entry Center | Miniumum | 102 |
| 3 | Westville Correctional Facility | Low-Medium | 3,386 |
| 4 | Chain O'Lakes Correctional Facility | Minimum | 149 |
| 5 | Miami Correctional Facility | High-Medium | 3,151 |
| 6 | Pendleton Correctional Facility | Maximum | 1,882 |
| 7 | Correctional Industrial Facility | Low-Medium | 1,447 |
| 8 | New Castle Correctional Facility | Low-Medium | 2,569 |
| 9 | Rockville Correctional Facility | Low-Medium | 1,206 |
| 10 | Indiana Women's Prison | Maximum | 616 |
| 11 | Indianapolis Women's Community Re-Entry Center | Minimum | 90 |
| 12 | Marion County Female Work Release | Not rated | 49 |
| 13 | Liberty Hall | Minimum | 148 |
| 14 | Marion County Work Release | Not rated | 48 |
| 15 | Indianapolis Re-Entry Educational Facility Minimum | Minimum | 371 |
| 16 | Plainfield Correctional Facility | Low-Medium | 1,650 |
| 17 | Reception Diagnostic Center | Male intake | 636 |
| 18 | Putnamville Correctional Facility | Low-Medium | 2,574 |
| 19 | Edinburgh Correctional Facility | Minimum | 315 |
| 20 | Wabash Valley Correctional Facility | High-Medium | 2,082 |
| 21 | Madison Correctional Facility | Minimum | 475 |
| 22 | Henryville Correctional Facility | Minimum | 197 |
| 23 | Branchville Correctional Facility | Low-Medium | 1,414 |
| 24 | Evansville Work Release | Not rated | 15 |
Source: Indiana Department of CorrectionInmate population on Dec. 20, 2010
