Why This Site Exists
California treats many jail, arrest, and custody records as public records, but public access is split across different offices. The Contra Costa County Office of the Sheriff runs the local In-Custody Locator for people in county jail. The California Department of Corrections and Rehabilitation runs CIRIS for sentenced state prisoners. Federal and immigration custody use separate BOP and ICE search tools. This site organizes those rosters, locators, facility pages, phone numbers, visit rules, mail rules, and request steps in one plain-language reference.
What Is Included
The content focuses on official custody channels and the practical steps that matter when someone has been booked, released, transferred, or moved into another system.
- Lookup help for jail inmate records, jail roster mugshots, and court records after a jail arrest.
- Facility pages for Martinez Detention Facility, West County Detention Facility, West County Reentry Treatment and Housing, Marsh Creek Detention Facility, and the Custody Alternative Facility.
- Guidance for using the Contra Costa In-Custody Locator, In-Custody Reports, California VINE, and CDCR CIRIS when a county jail search is not enough.
- Records-request context for booking records, public arrest information, and booking-photo questions when the online tools do not show what is needed.
What This Site Cannot Do
Contra Costa County Inmate Population is privately run. It is not connected to the Contra Costa County Office of the Sheriff, Martinez Detention Facility, CDCR, BOP, ICE, any court, or any other government agency.
- We cannot release, hold, transfer, or move anyone in custody.
- We cannot post bond, schedule a visit, place a commissary order, or send money for a reader.
- We cannot give legal advice or tell anyone how to handle a criminal case.
- We cannot guarantee that every phone number, fee, address, schedule, or roster entry is current.
Only the office that holds or created a record can confirm custody status, charges, court dates, release details, or record availability.
Search Partners
Some pages may include search tools operated by third-party providers. Those providers set their own prices, terms, result coverage, and data practices. If a visitor chooses a paid signup or paid report through a partner tool, this site may receive a referral fee. That support helps keep the public reference pages available, but it does not give us control over partner pricing, partner records, or partner search results.