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 September 25, 2026.
Eureka, California, in Humboldt County, has about 25,000 residents (2024 Census Bureau estimate). A DUI arrest in Eureka starts two cases, a criminal case (in the Superior Court of California, County of Humboldt) and a license case before the DMV, and leaves three records. This guide follows the arrest from the roadside to the court file and the driving record.
This guide covers the law, the arrest, booking, the court case, the license case, the records and common questions.
Related guides: Eureka public records, Humboldt County DUI, Eureka arrest records, Eureka warrants, Eureka inmate search, Eureka criminal records, California arrest records and California inmate search.
The DUI Law in California
In California the offense is DUI, and the limit is 0.08.
Driving in California is consent to a breath or blood test when an officer has cause to suspect DUI; the license case that follows a refusal or a failed test is run by the DMV, separately from the criminal case.
For charging and sentencing, California counts prior offenses within 10 years.
Who Makes DUI Arrests in Eureka
The Humboldt County Sheriff's Office and the agency that reports for Eureka (filed by the FBI as Eureka Police Department) make the DUI arrests in and around Eureka.
The FBI's agency list also places one campus police department, one other agency, two state agencies and two state police units in Humboldt County (the arrest records guide names each one); the Highway Patrol's two offices make the arrests on the state highways.
Together, the six agencies in Humboldt County with all twelve months of 2025 on file reported 5,197 arrests to the FBI that year, all offenses together; the FBI's count for Humboldt County does not break DUI out.
Booking After a DUI Arrest in Eureka
A driver arrested for DUI and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Humboldt County Sheriff's Office, held about 320 people on an average day in 2025 by the Vera Institute of Justice's count and has a jail page SearchSystems verified at humboldtgov.org/331/Jail-Reports, phone (707) 441-5159. The Eureka inmate search guide covers the jail in full.
The Court Case
The District Attorney files the charge, and the case is heard in the Superior Court of California, County of Humboldt.
The court records page SearchSystems verified for the county is at humboldt.courts.ca.gov/case-record-request-form.
California has no single public index of every trial court case; each court's records are looked up through that court.
The License Case
A DUI arrest starts two cases: the criminal one above and an administrative one over the license, run by the DMV. The driving record, kept by the California Department of Motor Vehicles, carries the result of both.
The Records a DUI Leaves
- The arrest report: from the agency that made the arrest, under the California Public Records Act.
- The court file: from the Superior Court of California, County of Humboldt, kept by the Superior Court clerk.
- The driving record: from the California Department of Motor Vehicles.
More on each: Eureka arrest records and Eureka court records.
Frequently Asked Questions
What is the DUI limit in California?
0.08 percent blood alcohol.
Where is a DUI case from Eureka heard?
In the Superior Court of California, County of Humboldt, brought by the District Attorney. The court records page SearchSystems verified for the county is at humboldt.courts.ca.gov.
Where is a person arrested for DUI in Eureka held?
At the county jail, run by the Humboldt County Sheriff's Office, if kept in custody.
Who handles the license after a DUI arrest in California?
The DMV, in an administrative case separate from the court case.
How long does a DUI count as a prior in California?
10 years.
Is this the official Eureka 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.