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 24, 2026 and September 28, 2026.
Cass County, North Dakota, has about 201,000 residents (2024 Census Bureau estimate). A DUI arrest in Cass County starts two cases, a criminal case in the Cass County District Court and a license case before the Department of Transportation, 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: Cass County public records, Cass County arrest records, Cass County warrants, Cass County inmate search, Cass County criminal records, North Dakota arrest records and North Dakota inmate search.
The DUI Law in North Dakota
Drunk driving is charged as DUI in North Dakota, at a blood alcohol level of 0.08 or more.
Driving in North Dakota 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 Department of Transportation, separately from the criminal case.
Who Makes DUI Arrests in Cass County
The Cass County Sheriff's Office and the agencies that report for Fargo and West Fargo make the DUI arrests in Cass County.
The FBI's agency list also places one more agency in Cass County: North Dakota State University (campus police).
Together, the three agencies in Cass County with all twelve months of 2025 on file reported 5,021 arrests to the FBI that year, all offenses together; the FBI's count for Cass County does not break DUI out.
Booking After a DUI Arrest in Cass County
A driver arrested for DUI and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Cass County Sheriff's Office, held about 330 people on an average day in 2023 by the Vera Institute of Justice's count and has a jail page SearchSystems verified at casscountynd.gov/our-county/sheriff, phone (701) 241-5800. The Cass County inmate search guide covers the jail in full.
The Court Case
The State's Attorney files the charge, and the case is heard in the Cass County District Court.
The State's Attorney's page SearchSystems verified is at casscountynd.gov/our-county/states-attorney, phone (701) 241-5850.
The court records page SearchSystems verified for the county is at casscountynd.gov/our-county/courts, phone (701) 451-6900.
Statewide, North Dakota Courts Records Inquiry is the North Dakota courts' free statewide case search.
The License Case
The court case is only half the record. The Department of Transportation runs a separate administrative case over the license, which can suspend it before the criminal case is decided, and the North Dakota Department of Transportation keeps the driving record the conviction goes on.
The Records a DUI Leaves
- The arrest report: from the agency that made the arrest, under the North Dakota Open Records Law.
- The court file: from the Cass County District Court, kept by the Clerk of District Court.
- The driving record: from the North Dakota Department of Transportation.
More on each: Cass County arrest records, Cass County police reports and Cass County court records.
Frequently Asked Questions
What is the DUI limit in North Dakota?
0.08 percent blood alcohol.
Where is a DUI case from Cass County heard?
In the Cass County District Court, brought by the State's Attorney. The court records page SearchSystems verified for the county is at casscountynd.gov/our-county/courts.
Where is a person arrested for DUI in Cass County held?
At the county jail, run by the Cass County Sheriff's Office, if kept in custody.
Who handles the license after a DUI arrest in North Dakota?
The Department of Transportation, in an administrative case separate from the court case.
Is this the official Cass 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.