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.
Lyon County, Minnesota, has about 26,000 residents (2024 Census Bureau estimate). A DWI arrest in Lyon County starts two cases, a criminal case in the Lyon County District Court and a license case before Driver and Vehicle Services, 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: Lyon County public records, Lyon County arrest records, Lyon County warrants, Lyon County criminal records, Lyon County court records, Minnesota arrest records and Minnesota inmate search.
The DWI Law in Minnesota
In Minnesota the offense is DWI, and the limit is 0.08.
Driving in Minnesota is consent to a breath or blood test when an officer has cause to suspect DWI; the license case that follows a refusal or a failed test is run by Driver and Vehicle Services, separately from the criminal case.
For charging and sentencing, Minnesota counts prior offenses within 10 years.
Who Makes DWI Arrests in Lyon County
The Lyon County Sheriff's Office and the agencies that report for Marshall, Tracy and Minneota make the DWI arrests in Lyon County.
The FBI's agency list also places one more agency in Lyon County: the State Patrol at Marshall (state police); the State Patrol at Marshall makes the arrests on the state highways.
Together, the three agencies in Lyon County with all twelve months of 2024 on file reported 390 arrests to the FBI that year, all offenses together; the FBI's count for Lyon County does not break DWI out.
Booking After a DWI Arrest in Lyon County
A driver arrested for DWI and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Lyon County Sheriff's Office, held about 28 people on an average day in 2021 by the Vera Institute of Justice's count.
The Court Case
A DWI charge from Lyon County is brought by the County Attorney in the Lyon County District Court.
The County Attorney's page SearchSystems verified is at lyoncountymn.gov/departments/attorney, phone (507) 537-6755.
The court records page SearchSystems verified for the county is at mncourts.gov/find-courts/lyon.
Statewide, Minnesota Court Records Online is the Minnesota Judicial Branch's free statewide case search.
The License Case
A DWI arrest starts two cases: the criminal one above and an administrative one over the license, run by Driver and Vehicle Services. The driving record, kept by the Minnesota Driver and Vehicle Services, carries the result of both.
The Records a DWI Leaves
- The arrest report: from the agency that made the arrest, under the Minnesota Government Data Practices Act.
- The court file: from the Lyon County District Court, kept by the court administrator.
- The driving record: from the Minnesota Driver and Vehicle Services.
More on each: Lyon County arrest records, Lyon County police reports and Lyon County court records.
Frequently Asked Questions
What is the DWI limit in Minnesota?
0.08 percent blood alcohol.
Where is a DWI case from Lyon County heard?
In the Lyon County District Court, brought by the County Attorney.
Where is a person arrested for DWI in Lyon County held?
At the county jail, run by the Lyon County Sheriff's Office, if kept in custody.
Who handles the license after a DWI arrest in Minnesota?
Driver and Vehicle Services, in an administrative case separate from the court case.
How long does a DWI count as a prior in Minnesota?
10 years.
Is this the official Lyon 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.