Reviewed and updated October 11, 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 11, 2026.
Susanville, California, in Lassen County, has about 12,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Susanville is held at the county jail, run by the Lassen 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: Susanville public records, Lassen County inmate search, Susanville arrest records, Susanville warrants, Susanville criminal records, Susanville court records, California arrest records and California inmate search.
Finding Someone in Custody in Susanville
The county jail, run by the Lassen County Sheriff's Office, holds everyone kept in custody after an arrest in Susanville, from every agency.
SearchSystems opened and checked the jail page of the Lassen County Sheriff's Office at lassencounty.gov/388/Adult-Detention-Facility-Jail (page title: Adult Detention Facility (Jail) | Lassen County, CA), phone 530-251-5245, Monday through Friday 8 am to 5 pm, which answered when SearchSystems opened it on October 11, 2026.
That page is the office's jail information page rather than a roster, so a search for a particular person goes through the office at 530-251-5245.
The Lassen County Jail by the Numbers
On an average day in 2025 the jail held about 76 people, down from about 100 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 210 beds, and it ran at 50 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Lassen County has about 28,000 residents (2024 Census Bureau estimate), so the jail holds about 27 people for every 10,000 residents.
Who Books People Into the Lassen County Jail
The Lassen County Sheriff's Office and the agency that reports for Susanville (filed by the FBI as Susanville Police Department) make the arrests that end in a booking in and around Susanville.
The FBI's agency list also places these agencies in Lassen County: Union Pacific Railroad in Lassen County (other agency); California Department of Forestry and Fire Protection at Lassen-Modoc (state agency); the Highway Patrol's Susanville Area Office (state police).
The largest arrest counts reported to the FBI were Susanville's 317 for 2025 and the Lassen County Sheriff's Office's 270 for 2025.
Together, the two agencies in Lassen County with all twelve months of 2025 on file reported 587 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 Susanville 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 Lassen 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 Susanville?
Ask the Lassen County Sheriff's Office at 530-251-5245; its jail page SearchSystems verified is at lassencounty.gov.
How many people are in the Lassen County jail?
About 76 on an average day in 2025, the latest year in the Vera Institute's jail data, against a rated capacity of 210 beds.
What is the phone number for the Lassen County jail?
530-251-5245, the number on the page of the Lassen County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Lassen 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 Susanville website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.