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.
Platte County, Missouri, has about 113,000 residents (2024 Census Bureau estimate). A DWI arrest in Platte County starts two cases, a criminal case in the Platte County Circuit Court and a license case before the Department of Revenue, 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: Platte County public records, Platte County arrest records, Platte County warrants, Platte County inmate search, Platte County criminal records, Missouri arrest records and Missouri inmate search.
The DWI Law in Missouri
In Missouri the offense is DWI, and the limit is 0.08.
Driving in Missouri 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 the Department of Revenue, separately from the criminal case.
Who Makes DWI Arrests in Platte County
The Platte County Sheriff's Office and the agencies that report for Parkville, Platte City, Riverside, Weatherby Lake, Weston, Edgerton and two more cities make the DWI arrests in Platte County.
The FBI's agency list also places one more agency in Platte County: Kansas City International Airport (other agency).
Together, the seven agencies in Platte County with all twelve months of 2025 on file reported 2,702 arrests to the FBI that year, all offenses together; the FBI's count for Platte County does not break DWI out.
The Smithville Police Department and the Kansas City Police Department are each listed by the FBI across several counties including Platte County, so their arrests are not broken out for Platte County here.
Booking After a DWI Arrest in Platte 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 Platte County Sheriff's Office, held about 120 people on an average day in 2021 by the Vera Institute of Justice's count and has a jail page SearchSystems verified at plattesheriff.org/divisions/detention/index.php, phone 816-858-2424. The Platte County inmate search guide covers the jail in full.
The Court Case
A DWI charge from Platte County is brought by the Prosecuting Attorney in the Platte County Circuit Court.
The Prosecuting Attorney's page SearchSystems verified is at co.platte.mo.us/prosecutor, phone (816) 858-3476.
The court records page SearchSystems verified for the county is at co.platte.mo.us/circuit-clerk, phone (816) 858-2232.
Statewide, Case.net is the Missouri courts' 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 the Department of Revenue. The driving record, kept by the Missouri Department of Revenue Driver License Bureau, carries the result of both.
The Records a DWI Leaves
- The arrest report: from the agency that made the arrest, under the Missouri Sunshine Law.
- The court file: from the Platte County Circuit Court, kept by the Circuit Clerk.
- The driving record: from the Missouri Department of Revenue Driver License Bureau.
More on each: Platte County arrest records, Platte County police reports and Platte County court records.
Frequently Asked Questions
What is the DWI limit in Missouri?
0.08 percent blood alcohol.
Where is a DWI case from Platte County heard?
In the Platte County Circuit Court, brought by the Prosecuting Attorney. The court records page SearchSystems verified for the county is at co.platte.mo.us/circuit-clerk.
Where is a person arrested for DWI in Platte County held?
At the county jail, run by the Platte County Sheriff's Office, if kept in custody.
Who handles the license after a DWI arrest in Missouri?
The Department of Revenue, in an administrative case separate from the court case.
Is this the official Platte 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.