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 24, 2026.
Ozaukee County, Wisconsin, has about 94,000 residents (2024 Census Bureau estimate). An OWI arrest in Ozaukee County starts two cases, a criminal case in the Ozaukee County Circuit Court and a license case before the Division of Motor Vehicles, 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: Ozaukee County public records, Ozaukee County arrest records, Ozaukee County warrants, Ozaukee County inmate search, Ozaukee County criminal records, Wisconsin arrest records and Wisconsin inmate search.
The OWI Law in Wisconsin
In Wisconsin the offense is OWI, and the limit is 0.08.
Driving in Wisconsin is consent to a breath or blood test when an officer has cause to suspect OWI; the license case that follows a refusal or a failed test is run by the Division of Motor Vehicles, separately from the criminal case.
Wisconsin sets no time limit on prior offenses: every earlier conviction counts toward a repeat charge.
Who Makes OWI Arrests in Ozaukee County
The Ozaukee County Sheriff's Office and the agencies that report for Mequon, Cedarburg, Port Washington, Grafton, Saukville and Thiensville make the OWI arrests in Ozaukee County.
Together, the seven agencies in Ozaukee County with all twelve months of 2025 on file reported 1,634 arrests to the FBI that year, all offenses together; the FBI's count for Ozaukee County does not break OWI out.
The Bayside Police Department and the Newburg Police Department are each listed by the FBI across several counties including Ozaukee County, so their arrests are not broken out for Ozaukee County here.
Booking After an OWI Arrest in Ozaukee County
A driver arrested for OWI and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Ozaukee County Sheriff's Office, held about 210 people on an average day in 2025 by the Vera Institute of Justice's count and has a jail page SearchSystems verified at ozaukeecounty.gov/165/Sheriff, phone (262) 284-7172. The Ozaukee County inmate search guide covers the jail in full.
The Court Case
The District Attorney files the charge, and the case is heard in the Ozaukee County Circuit Court.
The District Attorney's page SearchSystems verified is at ozaukeecounty.gov/137/District-Attorney, phone 262-284-8380.
The court records page SearchSystems verified for the county is at ozaukeecounty.gov/190/Access-Court-Records.
Statewide, Wisconsin Circuit Court Access is the free statewide case search of every circuit court.
The License Case
The court case is only half the record. The Division of Motor Vehicles runs a separate administrative case over the license, which can suspend it before the criminal case is decided, and the Wisconsin Division of Motor Vehicles keeps the driving record the conviction goes on.
The Records an OWI Leaves
- The arrest report: from the agency that made the arrest, under the Wisconsin Public Records Law.
- The court file: from the Ozaukee County Circuit Court, kept by the Clerk of Circuit Court.
- The driving record: from the Wisconsin Division of Motor Vehicles.
More on each: Ozaukee County arrest records, Ozaukee County police reports and Ozaukee County court records.
Frequently Asked Questions
What is the OWI limit in Wisconsin?
0.08 percent blood alcohol.
Where is an OWI case from Ozaukee County heard?
In the Ozaukee County Circuit Court, brought by the District Attorney. The court records page SearchSystems verified for the county is at ozaukeecounty.gov/190/Access-Court-Records.
Where is a person arrested for OWI in Ozaukee County held?
At the county jail, run by the Ozaukee County Sheriff's Office, if kept in custody.
Who handles the license after an OWI arrest in Wisconsin?
The Division of Motor Vehicles, in an administrative case separate from the court case.
How long does an OWI count as a prior in Wisconsin?
There is no time limit; every prior conviction counts.
Is this the official Ozaukee 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.