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San Mateo County Jail Inmate Search

San Mateo County operates detention facilities managed by the San Mateo County Sheriff's Department, serving Redwood City and surrounding communities. The jail system processes bookings from law enfor...

📍 Redwood City, CA
👥 Pop. 764, 000
🗺 1, 163 sq mi
🏛 San Francisco Bay Area (Peninsula)
Information verified by independent research and public records · ⚠ Not legal advice · ⓘ Not a government website
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San Mateo County, California

Peninsula county between San Francisco and Silicon Valley. San Mateo County Jail in Redwood City is the main facility. The Maple Street Correctional Center in Redwood City provides additional capacity.

County Seat
Redwood City
Population
764, 000
Area
449 sq mi
Jail Capacity
~960 beds
Superior Court
📅 400 County Center, Redwood City
📞 (650) 363-4500
Neighboring Counties
San Francisco, Santa Clara, Alameda, Santa Cruz
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San Mateo County Jail Facilities

San Mateo County operates detention facilities managed by the San Mateo County Sheriff's Department, serving Redwood City and surrounding communities. Bookings originate from law enforcement agencies operating throughout the county.

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Search Tip

When searching for an inmate in San Mateo County, have their full legal name and date of birth ready. This allows you to cross-reference results quickly and verify you have the right person.

Facility Information

📍 Maguire Correctional Facility
1000 Marshall St, Redwood City, CA 94063
☎ (650) 363-4000
📍 Maple Street Correctional Center
1010 Mission Rd, South San Francisco, CA 94080
☎ (650) 599-3000

Need help locating an inmate?

📞 Free 24/7 Search: (916) 633-2220

How to Find Someone in San Mateo County Jail

Whether you just found out about an arrest or haven't heard from someone in days, here's exactly what to do - in order.

1

Search for the Inmate

Use the online inmate locator orCall the San Mateo County Sheriff's Office or our free search line with the person's full legal name and date of birth.

2

Get Booking Details

Obtain the booking number, charges listed, bail amount, and which facility they are being held at.

3

Contact a Bail Bondsman

If bail has been set, a licensed bail bondsman can secure release for approximately 10% of the bail amount. Call (916) 633-2220, a licensed bail bondsman serving San Mateo County is available 24/7.

4

Prepare for Arraignment

Arraignment in San Mateo County takes place within 48 - 72 hours of booking at San Mateo County Superior Court. Ensure legal representation is in place before this hearing.

San Mateo Superior Court and Arraignment

San Mateo County Superior Court operates from the Hall of Justice in Redwood City, which handles the majority of criminal cases. A Northern Branch Courthouse in South San Francisco handles cases from the northern Peninsula. Court case records can be searched by name through the court's online system.

Court Name
San Mateo County Superior Court
Address
400 County Center, Redwood City 94063
Phone
(650) 363-4500
Arraignment
Within 48 hours of arrest
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What to Do Next

Once you've confirmed your loved one is in San Mateo County custody, time matters. Here are the four things to do immediately.

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Get a Bail Bondsman

A licensed bail bondsman can post bail for ~10% of the set amount. San Mateo County follows the county bail schedule set by the San Mateo County Superior Court. The amount set depends on the type of charge and may be adjusted by a judge at arraignment.

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Secure Legal Counsel

An attorney or public defender must be in place before the arraignment at San Mateo County Superior Court. Do not wait on this.

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Find the Court Date

Arraignment happens within 48 - 72 hours of booking. Confirm the exact court date and courthouse address from the booking paperwork.

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Send Money for Commissary

Inmates in San Mateo County can receive commissary funds to purchase hygiene items, food, and phone credits. Ask the facility for approved deposit methods.

What Happens After an Arrest in San Mateo County

Understanding the process that follows an arrest in San Mateo County helps families act quickly and avoid critical mistakes during a stressful situation.

1

Booking at San Mateo

After arrest, the person is transported to the San Mateo County jail for booking. The booking process — which covers fingerprinting, photos, and a warrant check — typically takes between 2 and 6 hours. After booking is finalized, the individual's record becomes visible in the county inmate system.

2

Bail Is Set

For most misdemeanors, bail is set according to the San Mateo County bail schedule immediately after booking. When felony charges are involved, bail is set formally at the arraignment hearing, which must occur within 48 hours. Reach out to a licensed bail bondsman the moment bail is set to start the release process immediately.

3

Arraignment at Superior Court

The first court appearance in San Mateo County occurs at the San Mateo County Superior Court, typically within 48 hours of arrest for in-custody defendants. The arraignment is where charges are formally presented, the defendant enters a plea, and the judge reviews bail conditions. An attorney should be present if at all possible.

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Can't Locate Your Person?

If your loved one was recently arrested in San Mateo County and does not yet appear in the online system, booking may still be in progress. Call our free line and a live agent will check directly with the San Mateo County Sheriff and verify their status in minutes.

Bail Bonds in San Mateo County

Licensed bail bondsmen operating in San Mateo County can typically post bond within 2 to 4 hours of receiving the required paperwork and premium payment. Our free line connects you directly with a bondsman who knows the San Mateo County jail system and local court schedule.

Visitation, Mail & Commissary in San Mateo County

Once you have located your loved one at Maguire Correctional Facility, staying in contact is the next priority. San Mateo County follows California guidelines for all inmate contact including in-person visits, mail, phone calls, and commissary deposits. Here is what family members and friends need to know.

👥 Visitation

Visitors must be pre-approved by Maguire Correctional Facility and present a valid government-issued photo ID. All visitors are subject to search. Anyone currently on parole or active probation is typically barred from visiting. Minors must be accompanied by a parent or legal guardian. Always verify visiting hours with the San Mateo County Sheriff before traveling as schedules change regularly. Some facilities offer video visitation as an alternative when in-person visits are restricted or unavailable.

✉ Mail Policy

Standard first-class letters and postcards are accepted at Maguire Correctional Facility and inspected before delivery. Each envelope must include the inmate's full legal name and their current booking number. Packages mailed or delivered directly to the facility are generally not accepted at California county jails. Use approved vendors for books and clothing. Never send cash, checks, or gift cards through the mail. To send funds, use the commissary deposit service authorized by the facility.

💰 Sending Money

Commissary deposits for San Mateo County inmates are made through services like JPay, Access Corrections, or TouchPay. Payments can be submitted online, over the phone, or at a kiosk located in the facility lobby. Most deposits are applied to the inmate's commissary account within one to two business days. Commissary balances cover food items, personal hygiene products, writing supplies, and phone credits ordered through the jail's internal system.

📞 Phone Calls

Outgoing calls from Maguire Correctional Facility are placed through a contracted phone service provider. To receive calls, family members need to set up a prepaid account with the contracted phone vendor. California regulates in-state jail call rates. Widely used providers include Securus Technologies (securustech.net), GTL/ViaPath (connectnetwork.com), and ICSolutions. Contact the San Mateo County Sheriff's Office or check their website to confirm the current provider for the facility.

Frequently Asked Questions - San Mateo County Jail

To locate an inmate in San Mateo County, use the online inmate search system at the sheriff's website, or call our free 24/7 inmate search line. Have the person's full legal name and date of birth ready.
Maguire Correctional Facility is the primary detention facility, located at 1000 Marshall St, Redwood City, CA 94063. It is operated by the San Mateo County Sheriff's Department.
Booking at San Mateo County facilities typically takes 3 - 6 hours for misdemeanor arrests. Felony arrests typically require 8 to 12 hours for processing due to additional warrant checks and classification steps.
After booking, a bail amount is set according to the San Mateo County bail schedule. Within 48 - 72 hours, the person will appear before a judge at San Mateo County Superior Court for arraignment. The arraignment judge reviews and may adjust bail while the defendant enters their initial plea.
San Mateo County Jail uses a third-party contracted phone vendor. Families must set up a prepaid calling account with that vendor to receive calls. Common providers in California include GTL/ViaPath (connectnetwork.com), Securus Technologies (securustech.net), and ICSolutions. Check the sheriff's website or call the jail information line to confirm the current vendor for San Mateo. Call rates are regulated in California and are typically $0.06 to $0.14 per minute for in-state calls.
Inmates at Maguire Correctional Facility can receive funds through the facility's approved commissary deposit service. JPay, Access Corrections, and TouchPay are the most common deposit services across California county jails. Deposits can be made online, by phone, or at a kiosk. Once credited — usually within 24 to 48 hours — the funds can be spent on food, hygiene products, writing supplies, and phone time through the jail commissary.
After arrest and booking at Maguire Correctional Facility, bail is set according to the San Mateo County bail schedule for most misdemeanors, or by a judge at arraignment for felony charges. Under California law, a licensed bail bondsman charges a non-refundable 10 percent premium, then files a surety bond with the court to secure the defendant's release while the case proceeds. A missed court date results in bond forfeiture and the immediate issuance of a bench warrant.
Standard first-class mail is accepted at Maguire Correctional Facility and is inspected before delivery. Write the inmate's full legal name and booking number clearly on the front of the envelope. California county jails generally do not accept packages sent directly and instead require families to order through approved third-party vendors. Never place cash, checks, or gift cards in mail envelopes.
After bail is posted at Maguire Correctional Facility, release processing typically takes between 2 and 8 hours depending on staffing levels and facility workload. Weekends and holidays may result in longer processing times. An active parole or probation hold means extra steps are needed before the facility can process a release.
Visitation at Maguire Correctional Facility requires advance registration and a valid government-issued photo ID. Visitors on active probation or parole may be denied entry. Minors generally require a parent or legal guardian. The visitation schedule is set by the San Mateo County Sheriff and is subject to change, so always verify current hours before traveling. Video visitation may be available as an alternative.
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