Martinez Detention Facility

Contra Costa County, California • County Jail

County Jail

Address: 1000 Ward Street, Martinez, CA 94553

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Martinez Detention Facility

Contra Costa County’s main jail sits next to the courthouse in downtown Martinez, handling more than 400 people each day for intake, classification, medical, and mental-health hearings. The facility connects directly to court holding cells, so same-day transports rarely leave the block.

Facility Address

1000 Ward Street
Martinez, CA 94553

Main Number

(925) 335-4600

Booking & lobby hours: 24/7 (ID required)

Inmate Search & Court Info

Look up bookings, bail amounts, housing locations, and court calendars through the Contra Costa Sheriff inmate inquiry portal before you visit Ward Street.

Contra Costa Inmate Lookup

Facility Snapshot

Average Daily Population415 people

Sentenced Males42

Sentenced Females1

Unsentenced Males349

Unsentenced Females23

*Average daily population data reported by Contra Costa Sheriff, 2025.

Visiting & Lobby Notes

Located directly across from the Contra Costa County Superior Court and DA’s Office.
All visitors must pass through the Ward Street screening lobby; lockers are limited.
Video visitation kiosks are available for remote sessions when in-person visits are suspended.
Use the Sheriff’s inmate inquiry portal before arriving to confirm bail, housing pod, and any holds from other counties.

Sheriff Resources & Directions

Review official Contra Costa Sheriff advisories, policy updates, and emergency notices before traveling downtown.

View the Contra Costa Sheriff's Office sitePreview unavailable. Tap to open official updates about booking and visitation.

Map location: 1000 Ward Street, Martinez, CA 94553

Featured Bail Agents

24/7

These licensed bail agencies advertise services for inmates held at Martinez Detention Facility and other Contra Costa County facilities.

Downtown Martinez Bail

Across from the courthouse with rush filing services.

(925) 555-2400 View profile →

Carquinez Strait Bonding

Payment plans for Martinez, Concord, and Vallejo arrests.

(707) 555-1882 View profile →

List your bail agency →

Featured Attorneys

Criminal defense and related counsel familiar with Contra Costa County and surrounding courts.

Contra Costa Justice Alliance

Felony arraignments, mental health court, and homicide matters.

(925) 555-7311 View profile →

Feature your law firm →

Live Updates

X Feed

Court Plaza Construction
12/18/2025
Contra Costa County is resurfacing the Main Street plaza. Plan for lane closures and allow extra time to reach the Ward Street lobby.
Storm Drain Project
12/11/2025
Public Works is trenching near Pine Street; ADA access to the Martinez Detention Facility is rerouted along Ward Street until crews finish.
Holiday Visitation Changes
12/4/2025
The Sheriff’s Office reminded families that holiday visiting requires online reservations and ID checks 30 minutes prior to start time.

Embedded public updates from the sheriff's official X account. Open on X ↗

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USAJails.com is an informational resource and is not affiliated with the Contra Costa County Sheriff’s Office. Always confirm schedules, release procedures, and court requirements directly with the facility.