San Quentin State Prison has a capacity to house 4,885 male inmates. The facility houses minimum to maximum security inmates, in addition it houses inmates who have been condemned to death. San Quentin State Prison is divided into sub-facilities: A, B which house North Block, North Segregation, South Block, East Block , West Block and the Adjustment Center. South Block is divided into sub blocks Alpine, Badger, Carson and Donner Units.
Certain inmates at San Quentin Rehabilitation Center are allowed to work in the Prison Industry Authority earing a wage working in construction labor, health facility maintenance, a furniture shop, and in mattress manufacturing. Academics available include adult basic education and the ability to earn a GED. Vocational courses are provided in computer literacy, plumbing, building maintenance, electronics, and machining.

Inmates at San Quentin Rehabilitation Center are allowed the following through the mail:
As of January 1, 2023 all calls made by inmates are free of charge.
To send money to an inmate incarcerated in California you will need their current location and their CDCR number.
Find an inmate's CDCR number, current location, and sentencing information by searching the
You must have an approved visitors application on file before you can attend a visit. You must request from the inmate CDCR Form 106. This is the California Visiting Questionnaire form and it must be signed by the inmate before you can fill it out and send it back to the facility at the inmate mailing address and add: "Attention: Visiting".

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