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Sheriff | Contra Costa County Office of The Sheriff

1850 Muir Road, Martinez, CA 94553

Eligibility
None
Required documents
None
Hours
24 hours daily
925-655-0000
Voice·

Administration

911
Voice·

Main Number

925-646-2441
Voice·

Backdoor Number

Languages
English and Spanish
Application process
Call or visit website; if calling from a cell phone use backdoor number for emergencies or to report suspicious activity.
Fees
None
Service area
Contra Costa County
Provides oversight of county detention facilities, follow-up of felonies and crimes committed in the county, patrol services for unincorporated areas of the county, oversees the Office of Emergency Services, and other related services.
Last Assured
05/22/2025
What's Here
Providing organization
Contra Costa County Office of The Sheriff
Provides oversight of all Office of the Sheriff operations, including Coroner's Office, detention facilities, patrol services for unincorporated Contra Costa County, follow-up of felony and misdemeanor crimes committed in the County, oversees the County's Office of Emergency Services, and other related law enforcement and homeland security services. Also provides drop-off for unused/expired medications.