| Prison Name: | Madison Correctional Institution |
| Status: | open |
| Classification: | mixed |
| Capacity: | 2258 |
| Opened: | 1987 |
| Managed By: | Ohio Department of Rehabilitation and Correction |
not to be confused with the Madison Correctional Institution, Madison, Florida
The Madison Correctional Institution (MaCI) is a state prison for men located in London, Madison County, Ohio. First opened in 1987, the facility has a working population of 2258 inmates, with a mix of security levels (minimum, medium, close, and a few max and super max).[1]
The facility is less than a mile from another Ohio state prison, London Correctional Institution.