Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
Tuolumne County, California, has about 54,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Tuolumne County is held at the county jail, run by the Tuolumne County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people, state prison and common questions.
Related guides: Tuolumne County public records, Tuolumne County arrest records, Tuolumne County warrants, Tuolumne County criminal records, Tuolumne County court records, California arrest records and California inmate search.
Finding Someone in Custody in Tuolumne County
A person kept in custody after an arrest in Tuolumne County is held at the county jail, run by the Tuolumne County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Tuolumne County Sheriff's Office at tcso.citizenrims.com/arrests (page title: Tuolumne County Sheriff's Office | Arrests), which answered when SearchSystems opened it on September 23, 2026.
That page is the office's jail information page rather than a roster.
The Tuolumne County Jail by the Numbers
On an average day in 2025 the jail held about 130 people, down from about 140 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 147 beds, and it ran at 98 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Tuolumne County has about 54,000 residents (2024 Census Bureau estimate), so the jail holds about 24 people for every 10,000 residents.
Who Books People Into the Tuolumne County Jail
The Tuolumne County Sheriff's Office and the agency that reports for Sonora make the arrests that end in a booking in Tuolumne County.
The FBI's agency list also places one more agency in Tuolumne County: the Highway Patrol's Sonora Area Office (state police).
The largest arrest counts reported to the FBI were the Tuolumne County Sheriff's Office's 1,042 for 2025 and Sonora's 385 for 2025.
Together, the two agencies in Tuolumne County with all twelve months of 2025 on file reported 1,427 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Tuolumne County arrest records.
From the Jail to State Prison
The jail holds people awaiting trial and people serving short sentences. A person sentenced to prison in Tuolumne County serves the sentence in a facility of the California Department of Corrections and Rehabilitation, whose inmate locator is at cdcr.ca.gov/search.
Frequently Asked Questions
How do I find an inmate in Tuolumne County?
Ask the Tuolumne County Sheriff's Office; its jail page SearchSystems verified is at tcso.citizenrims.com/arrests.
How many people are in the Tuolumne County jail?
About 130 on an average day in 2025, the latest year in the Vera Institute's jail data, against a rated capacity of 147 beds.
Where do people sentenced to prison in Tuolumne County go?
To a facility of the California Department of Corrections and Rehabilitation; its inmate locator is at cdcr.ca.gov/search.
Is this the official Tuolumne County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.