Contra Costa County
Inmate Search

Use the Contra Costa County Sheriff inmate locator above, or call CityWide at 1-833-385-5245 for an immediate lookup without navigating county websites. Search requires a full legal name and date of birth for best results. If no results appear within 8 hours of arrest, the person may still be in a city holding cell pending transfer to county, calling is faster than refreshing the search.

Contra Costa County operates 2 jail facilities. Martinez Detention Facility (MDF) at 1000 Ward St, Martinez, CA 94553 ((925) 335-1500), County seat facility; primary booking for central Contra Costa County arrests. West County Detention Facility (WCDF) at 5555 Giant Rd, Richmond, CA 94806 ((510) 374-3000), Serves Richmond, San Pablo, El Cerrito, Hercules, Pinole, and west county communities. CityWide can confirm which facility currently holds your person.

Several reasons a person may not appear in results: (1) They were arrested less than 4–8 hours ago and processing is not complete. (2) They are still in a city police holding cell before county transfer. (3) They were booked under a slightly different name, try last name only. (4) They may be held in a neighboring county. Call CityWide at 1-833-385-5245 and we verify status directly with the facility in minutes regardless of system lag.

The Contra Costa County inmate locator displays: booking number (keep this, you need it for mail, calls, and bail), current facility and housing unit, booking date, arresting agency, charges by California Penal Code section, bail amount set by the court, arraignment or next court date, and projected release date for sentenced inmates. Bail amount is the most important field, 10% of that number is what you pay CityWide to secure release.

Release from Contra Costa County after bail typically takes 2–4 hours. Weekday morning and afternoon releases are fastest. Nights, weekends, and holidays can add 1–2 hours due to reduced jail staffing. CityWide posts bail at all Contra Costa County facilities 24 hours a day and monitors the processing queue until the person walks out.

Contra Costa County bail schedule: DUI at $5,000, domestic violence at $25,000, assault at $25,000–$50,000, most felonies $25,000–$200,000. West Contra Costa (Richmond, El Cerrito) and East County (Antioch, Pittsburg) may have different holding patterns. California law sets bail bond premiums at exactly 10% of the full bail amount, this rate is the same for all bail agents in all 58 counties. CityWide offers payment plans for qualified co-signers. Call 1-833-385-5245 for an exact quote based on the charges and booking record.

Contra Costa County has two main facilities. Martinez allows visits on a set schedule by housing unit, contact (925) 335-1500. West County Detention in Richmond has a separate schedule at (510) 374-3000. All visits require valid photo ID and are limited to registered visitors. West County typically serves Spanish-speaking communities and has bilingual staff available.

Martinez Detention: [Inmate Full Name], [Booking Number], Martinez Detention Facility, 1000 Ward St, Martinez, CA 94553. West County: [Inmate Full Name], [Booking Number], West County Detention Facility, 5555 Giant Rd, Richmond, CA 94806.

Contra Costa County arrests go to one of two facilities based on geography. Richmond, San Pablo, El Cerrito, Hercules, and Pinole arrests typically go to West County Detention in Richmond. Concord, Antioch, Pittsburg, Brentwood, Walnut Creek, and Martinez arrests go to the Martinez Detention Facility. Records typically appear 2-4 hours after booking at either facility.

Contra Costa County's inmate search at cccso.us is open with no captcha or account needed. Search by last name and first name, or by booking number. Results show facility (Martinez or West County), housing unit, booking date, bail amount, charges, and arraignment date. The two-facility system means checking which one holds your person is the critical first step. West County vs. Martinez is determined by the arresting city.