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. Every office link was opened and checked against the office's own site between September 23, 2026 and October 11, 2026.
Union County, Ohio, has about 72,000 residents (2024 Census Bureau estimate). Its court cases are filed in the Union County Court of Common Pleas and the Municipal and County Courts, and the file of each case, kept by the Clerk of Courts, is the public record of it. This guide says which court hears what, where to look a case up and who keeps the files.
This guide covers the courts, the records page, criminal cases, kinds of files, directory links, cities and common questions.
Related guides: Union County public records, Union County arrest records, Union County warrants, Union County inmate search, Union County criminal records, Ohio arrest records and Ohio inmate search.
The Courts That Hear Cases from Union County
In Union County, the Union County Court of Common Pleas hears felonies, civil cases over $15,000, divorces, probate and juvenile matters, each in its own division.
Below it, the Municipal and County Courts take misdemeanors, traffic cases, evictions and civil cases up to $15,000; mayor's courts handle some village tickets.
Divorces go to the Domestic Relations Division of the Court of Common Pleas, and the file stays with the Clerk of Courts.
The Clerk of Courts keeps the files, and a copy of anything in a file comes from that office, under the court's own rules rather than the Ohio Public Records Act.
Looking Up a Case from Union County
The court records page SearchSystems verified for the county is at unioncountyohio.gov/Clerk-of-Courts-Records (page title: Union County, Ohio | Clerk of Courts Records), phone 937-645-4177, which answered when SearchSystems opened it on October 11, 2026.
Ohio has no single public index of every trial court case; each court's records are looked up through that court.
The Ohio court page SearchSystems verified is at supremecourt.ohio.gov/clerk/ecms.
What Reaches the Court from Union County
Together, the two agencies in Union County with all twelve months of 2025 on file reported 271 arrests to the FBI that year; the Prosecuting Attorney decides which of those arrests become cases in the Union County Court of Common Pleas or the Municipal and County Courts.
The Prosecuting Attorney's page SearchSystems verified is at unioncountyohio.gov/Prosecuting-Attorney (page title: Union County, Ohio | Prosecuting Attorney), phone 937-645-4190, 911 Location 249 West Fifth Street Marysville, OH 43040, which answered when SearchSystems opened it on September 23, 2026.
The Kinds of Court Files
The court file is one record with several readers: a criminal case from the arrest to the sentence, a divorce from the petition to the judgment, a traffic ticket from the citation to the conviction the court reports to the Ohio Bureau of Motor Vehicles, and an eviction or a lien on land.
The other Union County guides take the kinds of file one at a time: Union County criminal records, Union County divorce records, Union County traffic tickets, Union County DUI and Union County property records.
More Official Court Pages for Union County
The SearchSystems directory, online since 1997, lists the official pages for Union County and Ohio. These court pages from its Union County listing were opened again on October 2, 2026 and each one still answers:
- Marysville Municipal Court (court.marysvilleohio.org)
- Union County, Ohio (unioncountyohio.gov)
- Union County, Ohio (unioncountyohio.gov)
- Union County, Ohio (unioncountyohio.gov)
Cities in Union County
Wherever in the county a case arises, it is filed in the Union County Court of Common Pleas or the Municipal and County Courts.
SearchSystems has a guide to the offices of these cities in Union County, with the 2024 Census Bureau population:
- Marysville (29,276)
Frequently Asked Questions
How do I look up a court case in Union County?
The court records page SearchSystems verified for the county is at unioncountyohio.gov/Clerk-of-Courts-Records, phone 937-645-4177.
Which court hears felonies in Union County?
The Union County Court of Common Pleas, which hears felonies, civil cases over $15,000, divorces, probate and juvenile matters, each in its own division. The Municipal and County Courts take misdemeanors, traffic cases, evictions and civil cases up to $15,000; mayor's courts handle some village tickets.
Who keeps the court records in Union County?
The Clerk of Courts. Copies come from that office under the court's own rules.
Is there a statewide court case search in Ohio?
No. Each court's records are looked up through that court.
Is this the official Union 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.