[3] It was opened in June 1987, and covers 866 acres (350 ha) located in Ione, California.

[4] As of July 31, 2022, MCSP was incarcerating people at 115.2% of its design capacity, with 3,785 occupants.

[5] In 2005, MCSP became the only California state prison exclusively for Sensitive Needs Yards (SNY) inmates.

SNY inmates are segregated from the general prison population for their own safety.

Many are gang dropouts, informants, sex offenders, and former law enforcement officers.