San Quentin, CA San Quentin State Prison (SQ) View

San Quentin State Prison (SQ) is a California state prison in San Quentin, Marin County. It is operated by the California Department of Corrections and Rehabilitation (CDCR), not by the county sheriff. The facility primarily houses sentenced adult male inmates who have been committed to state custody after conviction. It is not a local booking jail for most pretrial detainees or short-term county sentences. Its role is to provide secure custody, classification, housing, programs, and reentry services within California’s state prison system. Arrests, initial bookings, bail, and most early court appearances for Marin County cases are generally handled through local law enforcement, the Marin County Jail, and the courts before any transfer to state prison.

Contact and Location Information

Jail Name: San Quentin State Prison (SQ)
Type: State Prison
Security Level: Minimum–maximum
Address: San Quentin State Prison
City: San Quentin
Zip: 94964
Phone: 415-454-1460
San Quentin State Prison (SQ) Contact Details

How to Find an Inmate at San Quentin State Prison (SQ)

The public can use the official inmate search link available on this page to look for someone held here. State prison searches and jail rosters commonly list identifying and custody information such as the person’s name, booking or admission date when available, charges or conviction information when available, custody status, and facility location. CDCR records may use a prison identification number and may not show the same details as a county jail roster. New records do not always appear immediately after arrest, booking, or transfer. Processing, identity checks, classification, and data entry can take several hours, and some records may update later. If the person was recently arrested in Marin County, also check the county jail or court records because the person may not have been transferred to state custody.

FAQs

How do I visit an inmate at San Quentin State Prison (SQ)?

Visits are usually scheduled under CDCR visiting rules, and visitors may need to be approved before they can visit. Check the facility’s current visiting schedule, appointment process, dress code, and any restrictions before going.

What do I need to bring when visiting San Quentin State Prison (SQ)?

Bring a valid government-issued photo ID, such as a driver’s license, state ID, passport, or military ID. Only approved items are usually allowed inside, so review the visiting rules before arrival.

How do I make phone or video calls with an inmate?

Inmates generally cannot receive incoming calls, but they may be able to make outgoing calls through the approved prison phone provider. Video calling, if available, must be scheduled and used according to facility and CDCR rules.

How do I send mail to an inmate?

Use the inmate’s full name and identification number, and follow the facility’s mail rules for addressing, paper, photos, and prohibited items. Mail is screened, and items that do not meet the rules may be rejected or returned.

How does the commissary work?

Commissary lets inmates buy approved items such as snacks, hygiene products, and writing supplies. Family or friends may be able to deposit funds through the approved CDCR deposit options, subject to limits and processing times.

How is bail set and how do I post bond at San Quentin State Prison (SQ)?

This is a state prison for sentenced inmates, so bail is generally not posted here. Bail or bond issues are usually handled earlier in the case through the court and the county jail where the person was booked.

What happens during the intake process at San Quentin State Prison (SQ) and when will the inmate appear in the system?

During intake, staff confirm identity, review records, assess medical and security needs, and assign housing or classification. Records may take several hours or longer to appear online after transfer or processing, so check the official search again later if nothing appears right away.

How to Send Money to San Quentin State Prison (SQ)

Family and friends can send money to inmates at San Quentin State Prison (SQ) through approved methods to help them purchase essential items from the commissary.