Contra Costa County operates detention facilities managed by the Contra Costa County Sheriff's Department, serving Martinez and surrounding communities. The jail system processes bookings from law enf...
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Claim This Spot →East Bay county with major cities including Richmond, Concord, Walnut Creek, and Antioch. The Martinez Detention Facility is the main adult jail. The county also operates the West County Detention Facility in Richmond.
Contra Costa County operates detention facilities managed by the Contra Costa County Sheriff's Department, serving Martinez and surrounding communities. All law enforcement agencies in the county route their bookings through the county jail system.
When searching for an inmate in Contra Costa County, have their full legal name and date of birth ready. With both on hand, you can verify results quickly and confirm you have the right person.
Need help locating an inmate?
📞 Free 24/7 Search: (916) 633-2220Whether you just found out about an arrest or haven't heard from someone in days, here's exactly what to do - in order.
Use the online inmate locator orCall the Contra Costa County Sheriff's Office or our free search line with the person's full legal name and date of birth.
Obtain the booking number, charges listed, bail amount, and which facility they are being held at.
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 Contra Costa County is available 24/7.
Arraignment in Contra Costa County takes place within 48 - 72 hours of booking at Contra Costa County Superior Court. Ensure legal representation is in place before this hearing.
Contra Costa County Superior Court operates from three divisions. The Central Division in Martinez handles felony and complex criminal matters. The Richmond branch handles West County cases. The Walnut Creek branch handles Central and East County cases including Walnut Creek, Concord, Antioch, and Pittsburg. Call the clerk to confirm which courthouse handles a specific case.
Once you've confirmed your loved one is in Contra Costa County custody, time matters. Here are the four things to do immediately.
Understanding the process that follows an arrest in Contra Costa County helps families act quickly and avoid critical mistakes during a stressful situation.
After arrest, the person is transported to the Contra Costa County jail for booking. A standard booking includes fingerprinting, intake photos, and a warrant check, and typically takes 2 to 6 hours. The inmate typically shows up in the county's records system as soon as booking is completed.
For most misdemeanors, bail is set according to the Contra Costa County bail schedule immediately after booking. For felony cases, the bail determination is made at arraignment, which California law requires within 48 hours. Don't wait — call a licensed bail bondsman as soon as bail is set to begin securing your loved one's release.
The first court appearance in Contra Costa County occurs at the Contra Costa County Superior Court, typically within 48 hours of arrest for in-custody defendants. At the arraignment hearing, the defendant hears the formal charges, enters a plea, and bail conditions are confirmed or modified. An attorney should be present if at all possible.
If your loved one was recently arrested in Contra Costa 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 Contra Costa County Sheriff and verify their status in minutes.
Licensed bail bondsmen operating in Contra Costa 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 Contra Costa County jail system and local court schedule.
Once you have located your loved one at Martinez Detention Facility, staying in contact is the next priority. Contra Costa 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.
Visitors must be pre-approved by Martinez Detention Facility and present a valid government-issued photo ID. All visitors are subject to search. Visitors on active parole or probation are usually not allowed into the facility. Minors must be accompanied by a parent or legal guardian. Always verify visiting hours with the Contra Costa County Sheriff before traveling as schedules change regularly. An increasing number of California county jails offer video visitation as an alternative to face-to-face visits.
Standard first-class letters and postcards are accepted at Martinez Detention Facility and inspected before delivery. Write the inmate's legal name and booking number on the outside of the envelope. Direct package delivery is not accepted at the majority of California county jails. Use approved vendors for books and clothing. Never send cash, checks, or gift cards through the mail. Always use the jail's designated commissary deposit service when sending funds to an inmate.
Commissary deposits for Contra Costa County inmates are made through services like JPay, Access Corrections, or TouchPay. Online, phone, and lobby kiosk payment options are typically available depending on the facility. Accounts are typically credited within 24 to 48 hours, though weekend deposits may take slightly longer. Through the jail's commissary ordering system, inmates can spend account funds on food, hygiene products, stationery, and phone credits.
Outgoing calls from Martinez Detention Facility are placed through a contracted phone service provider. Before receiving calls, family members and friends must establish a prepaid account with the phone vendor. California regulates in-state jail call rates. The most common phone vendors serving California jails are GTL/ViaPath at connectnetwork.com, Securus at securustech.net, and ICSolutions. Contact the Contra Costa County Sheriff's Office or check their website to confirm the current provider for the facility.
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