The Calaveras County Adult Detention Facility is commanded by the Custody Bureau Captain.

Custody consists of the detention facility (County jail), work release program, prisoner transportation, court security (bailiffs), and is responsible for the safety and security of persons pending trial or individuals convicted of crimes in Calaveras County. The county jail is the central booking and intake location for all law enforcement agencies operating in Calaveras County. The Sheriff’s Office is responsible for the care, custody, and control of individuals arrested in or transported to the custody of Calaveras County. The State of California and federal government impose standards to which the Sheriff must comply. These include minimum square foot living space, medical and dental treatment and other tax-supported services.