Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. Every office link was opened and checked against the office's own site on September 23, 2026.
Mendocino County, California, has about 89,000 residents (2024 Census Bureau estimate). In California the public criminal record is the court file, kept by the Superior Court clerk; the statewide criminal history kept by the California Department of Justice is released only to its subject and to the employers and agencies the law allows. This guide says where each record of a criminal case from Mendocino County is kept and how it is seen.
This guide covers the court file, the statewide record, local arrest records, the crimes behind the records, the prosecutor, sex offender registry, records requests, directory links and common questions.
Related guides: Mendocino County public records, Mendocino County arrest records, Mendocino County warrants, Mendocino County inmate search, Mendocino County court records, California arrest records and California inmate search.
Criminal Cases in the Superior Court of California, County of Mendocino
In California the public criminal record is the court file. Criminal cases from Mendocino County are heard by the Superior Court of California, County of Mendocino, which hears every civil, criminal, family, probate, traffic and juvenile case, and the file of each case is kept by the Superior Court clerk.
For Mendocino County, SearchSystems opened and checked the court records page for the county at mendocino.courts.ca.gov/portal (page title: Court Case Information | Superior Court of California | County of Mendocino), phone 916-845-4064, which answered when SearchSystems opened it on September 23, 2026.
California has no single public index of every trial court case; each court's records are looked up through that court.
The California Criminal History and Your Own Copy
The statewide criminal history kept by the California Department of Justice is closed to the public in California: it is released to its subject and to authorized employers and licensing agencies, and a member of the public uses the court's own case index instead.
To see your own record, the route is a Record Review through Live Scan fingerprinting, form BCIA 8016RR; the state fee is $25. The response cannot be used for immigration or visa purposes. Details are on the California Department of Justice page.
Arrest Records Kept Locally in Mendocino County
The Mendocino County Sheriff's Office and the agencies that report for Ukiah, Fort Bragg and Willits keep the arrest records in Mendocino County: the report and the booking record of each arrest stay with the agency that made it, separate from the court file and from the state repository.
The FBI's agency list also places these agencies in Mendocino County: Union Pacific Railroad in Mendocino County (other agency); California Department of Forestry and Fire Protection at Mendocino (state agency); the Highway Patrol's Ukiah Area Office (state police); each keeps the records of its own arrests.
Together, the four agencies in Mendocino County with all twelve months of 2025 on file reported 2,475 arrests to the FBI that year; how each case ended is in the court file, not in the arresting agency's.
The agencies and their counts, year by year, are in Mendocino County arrest records.
The Crimes Behind the Records: Mendocino County in 2025
The four agencies in Mendocino County with all twelve months of 2025 on file reported 464 violent and 588 property crimes to the FBI that year; the same agencies with both 2025 and 2024 complete reported 1,052 crimes in 2025 against 877 in 2024. Each reported crime is a report on file with the agency that took it, and each arrest that follows is the start of a criminal record.
The full crime section, agency by agency, is on the Mendocino County public records guide.
The District Attorney for Mendocino County
The District Attorney decides which arrests in Mendocino County become charges and files them in the Superior Court of California, County of Mendocino; the office answers questions about pending prosecutions, and the case files themselves are court records.
The office's page SearchSystems verified is at mendocinocounty.gov/government/district-attorney (page title: Office of the District Attorney | Mendocino County, CA), phone 707.463.4211, 100 North State Street, Room G-10 (PO BOX 1000) Ukiah, CA 95482, which answered when SearchSystems opened it on September 23, 2026.
The Sex Offender Registry for Mendocino County
Registered sex offenders living in Mendocino County are listed on the Megan's Law website, run by the California Department of Justice at meganslaw.ca.gov. The registry is tiered; some registrants are kept off the public site and others are shown by ZIP code only.
Registration itself is done in person with the local agency where the registrant lives: the sheriff's office, or the city police in a city with its own department.
Asking an Agency in Mendocino County for a Record
An arrest report, a booking record or a local criminal history letter comes from the agency that holds it, not from the court.
Under the California Public Records Act a county office must answer a request within 10 days, with up to 14 more days in unusual circumstances, and it may charge the direct cost of copying only, not staff time. The county records request page SearchSystems verified is at mendocinocounty.gov/government/executive-office/public-records-request (page title: Public Records Request | Mendocino County, CA).
More Official Criminal Records Pages for Mendocino County
The SearchSystems directory, online since 1997, lists the official pages for Mendocino County and California. These criminal records pages from its Mendocino County listing were opened again on October 2, 2026 and each one still answers:
- Crime Data, State of California (oag.ca.gov)
Frequently Asked Questions
Are criminal records public in Mendocino County?
The court files of criminal cases in the Superior Court of California, County of Mendocino are public and can be looked up through the court. The statewide criminal history kept by the California Department of Justice is not public; you can get your own for $25. The arrest report itself is released by the agency that made the arrest, under the California Public Records Act.
Can I search Mendocino County criminal cases online?
The court records page SearchSystems verified for the county is at mendocino.courts.ca.gov/portal (page title: Court Case Information | Superior Court of California | County of Mendocino).
How do I get my own California criminal history?
A Record Review through Live Scan fingerprinting, form BCIA 8016RR; the state fee is $25.
Who prosecutes crimes in Mendocino County?
The District Attorney, reached at 707.463.4211, which files its cases in the Superior Court of California, County of Mendocino.
Is this the official Mendocino 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.