This is a private reference site, not a government office. We cannot confirm custody, release an inmate, post bond, pull an official booking record, schedule a visit, or change a jail, court, or correctional record. Use the official Contra Costa County, California, state, federal, or immigration contacts below for those tasks.
Official Record Contacts
For current Contra Costa County jail custody, start with the sheriff's In-Custody Locator and the Martinez Detention Facility inmate information line. For official copies, released-person questions, police reports, or records that are no longer online, the Records & ID Unit is the local records fallback. Court dates, formal charges, warrants, dispositions, and criminal case records are handled by the Superior Court or District Attorney, not by this site.
Contra Costa County Office of the Sheriff
1850 Muir Road
Martinez, CA 94553
Office: (925) 655-0000
Dispatch: (925) 646-2441
TTY: 711
Records & ID Unit
2530 Arnold Drive, Suite 170
Martinez, CA 94553
Phone: (925) 335-1570
Fax: (925) 335-1588
Email: recordsinfo@so.cccounty.us
Hours: Monday-Friday, 8 AM-5 PM. Valid identification is required. The sheriff states that the unit has ten days to respond to requests, and fees are paid by exact cash or check only.
Custody Records and Inmate Information
Martinez Detention Facility inmate information: (925) 646-4493
Custody Services Administration: (925) 335-4644
In-custody records requests: csbrecords@so.cccounty.us
Out-of-custody records requests: recordsinfo@so.cccounty.us
Choose the contact by the type of record or custody question:
- For someone in a Contra Costa County jail, use jail inmate records, the In-Custody Locator, or the Martinez inmate information line.
- For booking-photo questions, use jail roster mugshots and the sheriff records process if no official photo appears online.
- For charges filed after booking, use court records after a jail arrest, Contra Costa Superior Court at 725 Court Street in Martinez, or (925) 608-1000.
- For a specific jail building, use the facility pages in the footer, including Martinez, West County, WRTH, Marsh Creek, and the Custody Alternative Facility.
- For a sentenced California prisoner, search CDCR CIRIS or call the CDCR Identification Unit at (916) 445-6713, Monday-Friday excluding holidays, 8:00 a.m.-4:30 p.m. Pacific.
- For federal custody, use the BOP inmate locator. For immigration detention, use ICE ODLS or ICE's detention reporting and information line at 1-888-351-4024.