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. Every office link was opened and checked against the office's own site on September 23, 2026.
Mercer County, New Jersey, has about 392,000 residents (2024 Census Bureau estimate). Its court cases are filed in the Superior Court of New Jersey, Mercer County, and the file of each case, kept by the Superior Court Clerk and the County Clerk, 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, cities and common questions.
Related guides: Mercer County public records, Mercer County arrest records, Mercer County warrants, Mercer County criminal records, Mercer County police reports, New Jersey arrest records and New Jersey inmate search.
The Courts That Hear Cases from Mercer County
In Mercer County, the Superior Court of New Jersey, Mercer County hears every civil, criminal, family and probate case.
A city with a municipal court of its own tries the tickets written under its ordinances.
Divorces go to the Superior Court's Family Part, and the file stays with the Superior Court Clerk's Office.
The Superior Court Clerk and the County Clerk keep the files, and a copy of anything in a file comes from that office, under the court's own rules rather than the Open Public Records Act.
Looking Up a Case from Mercer County
The court records page SearchSystems verified for the county is at njcourts.gov/courts/vicinages/mercer/offices (page title: Mercer Court Offices/Divisions | NJ Courts), phone 609-571-4200, which answered when SearchSystems opened it on September 23, 2026.
Statewide, New Jersey Courts Public Access is the Judiciary's free online case search for civil and criminal cases.
The New Jersey court page SearchSystems verified is at njcourts.gov/public.
What Reaches the Court from Mercer County
Together, the 11 agencies in Mercer County with all twelve months of 2025 on file reported 6,190 arrests to the FBI that year; the County Prosecutor decides which of those arrests become cases in the Superior Court of New Jersey, Mercer County.
The County Prosecutor's page SearchSystems verified is at mercercounty.org/departments/emergency-management-public-safety/pro... (page title: Prosecutor's Office | Mercer County, NJ), 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 New Jersey Motor Vehicle Commission, and an eviction or a lien on land.
The other Mercer County guides take the kinds of file one at a time: Mercer County criminal records, Mercer County divorce records, Mercer County traffic tickets, Mercer County DUI and Mercer County property records.
Cities in Mercer County
Wherever in the county a case arises, it is filed in the Superior Court of New Jersey, Mercer County; tickets under a city's own ordinances go to its municipal court where it has one.
SearchSystems has a guide to the offices of these cities in Mercer County, with the 2024 Census Bureau population; a city with its own court records guide opens there:
Frequently Asked Questions
How do I look up a court case in Mercer County?
The court records page SearchSystems verified for the county is at njcourts.gov/courts/vicinages/mercer/offices, phone 609-571-4200. Statewide, New Jersey Courts Public Access is the Judiciary's free online case search for civil and criminal cases.
Which court hears felonies in Mercer County?
The Superior Court of New Jersey, Mercer County, which hears every civil, criminal, family and probate case.
Who keeps the court records in Mercer County?
The Superior Court Clerk and the County Clerk. Copies come from that office under the court's own rules.
Is there a statewide court case search in New Jersey?
Yes: New Jersey Courts Public Access, the Judiciary's free online case search for civil and criminal cases.
Is this the official Mercer 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.