Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. Every office link was opened and checked against the office's own site between September 23, 2026 and September 27, 2026.
Cass County, Missouri, has about 114,000 residents (2024 Census Bureau estimate). In Missouri the public criminal record is the court file, kept by the Circuit Clerk; the statewide criminal history kept by the Missouri State Highway Patrol Criminal Justice Information Services Division is open to anyone who asks. This guide says where each record of a criminal case from Cass County is kept and how it is seen.
This guide covers the court file, the statewide record, local arrest records, the crimes behind the records, the prosecutor, sex offender registry, records requests, directory links and common questions.
Related guides: Cass County public records, Cass County arrest records, Cass County warrants, Cass County inmate search, Cass County court records, Missouri arrest records and Missouri inmate search.
Criminal Cases in the Cass County Circuit Court
In Missouri the public criminal record is the court file. Criminal cases from Cass County are heard by the Cass County Circuit Court, which hears every civil, criminal, family, probate and juvenile case, with associate circuit judges taking misdemeanors, traffic and small claims, and the file of each case is kept by the Circuit Clerk.
The court records page SearchSystems verified for the county is at casscounty.com/2207/Circuit-ClerkCourts (page title: Cass County Circuit Court | Cass County, MO), phone 816-380-8227, Monday thru Friday 8am to 4:30pm, which answered when SearchSystems opened it on September 23, 2026.
Statewide, Case.net is the Missouri courts' free statewide case search.
The Missouri Criminal History and Your Own Copy
Missouri is one of the states that lets anyone look up another person's statewide criminal history: the open record search on the MACHS site lets anyone check convictions by name, through the Missouri State Highway Patrol Criminal Justice Information Services Division. The result is the repository record, what agencies reported to the state, which is wider than one county's court index but can lag it.
Arrest Records Kept Locally in Cass County
The Cass County Sheriff's Office and the agencies that report for Raymore, Belton, Harrisonville, Pleasant Hill, Peculiar, Lake Winnebago and six more cities keep the arrest records in Cass County: the report and the booking record of each arrest stay with the agency that made it, separate from the court file and from the state repository.
The Lee's Summit Police Department, the Greenwood Police Department and the Kansas City Police Department are each listed by the FBI across several counties including Cass County, so their arrests are not broken out for Cass County here.
Together, the nine agencies in Cass County with all twelve months of 2025 on file reported 2,076 arrests to the FBI that year; how each case ended is in the court file, not in the arresting agency's.
The agencies and their counts, year by year, are in Cass County arrest records.
The Crimes Behind the Records: Cass County in 2025
The 11 agencies in Cass County with all twelve months of 2025 on file reported 164 violent and 1,186 property crimes to the FBI that year; the same agencies with both 2025 and 2024 complete reported 1,350 crimes in 2025 against 1,462 in 2024. Each reported crime is a report on file with the agency that took it, and each arrest that follows is the start of a criminal record.
The full crime section, agency by agency, is on the Cass County public records guide.
The Prosecuting Attorney for Cass County
The Prosecuting Attorney decides which arrests in Cass County become charges and files them in the Cass County Circuit Court; the office answers questions about pending prosecutions, and the case files themselves are court records.
The office's page SearchSystems verified is at casscounty.com/2191/Prosecuting-Attorney (page title: Prosecuting Attorney | Cass County, MO), phone 816-380-8250, 2501 W. Mechanic St. 2nd Floor Harrisonville, MO 64701, which answered when SearchSystems opened it on September 23, 2026.
The Sex Offender Registry for Cass County
Registered sex offenders living in Cass County are listed on the Missouri Sex Offender Registry, run by the Missouri State Highway Patrol at mshp.dps.missouri.gov/CJ38/searchRegistry.jsp. The registry is public and can be searched online.
Registration itself is done in person with the local agency where the registrant lives: the sheriff's office, or the city police in a city with its own department.
Asking an Agency in Cass County for a Record
An arrest report, a booking record or a local criminal history letter comes from the agency that holds it, not from the court.
Under the Missouri Sunshine Law a county office must answer a request within 3 business days, and it may charge research time and copying.
More Official Criminal Records Pages for Cass County
The SearchSystems directory, online since 1997, lists the official pages for Cass County and Missouri. These criminal records pages from its Cass County listing were opened again on October 2, 2026 and each one still answers:
- Missouri Sex Offender Registry (mshp.dps.missouri.gov)
Frequently Asked Questions
Are criminal records public in Cass County?
The court files of criminal cases are public, and so is the statewide criminal history kept by the Missouri State Highway Patrol Criminal Justice Information Services Division: the open record search on the MACHS site lets anyone check convictions by name. The arrest report itself is released by the agency that made the arrest, under the Missouri Sunshine Law.
Can I search Cass County criminal cases online?
The court records page SearchSystems verified for the county is at casscounty.com/2207/Circuit-ClerkCourts (page title: Cass County Circuit Court | Cass County, MO). Statewide, Case.net is the Missouri courts' free statewide case search.
How do I get my own Missouri criminal history?
Through the same name-based search, run on yourself.
Who prosecutes crimes in Cass County?
The Prosecuting Attorney, reached at 816-380-8250, which files its cases in the Cass County Circuit Court.
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.