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 on September 23, 2026.
Mercer County, Pennsylvania, has about 108,000 residents (2024 Census Bureau estimate). A DUI arrest in Mercer County starts two cases, a criminal case (in the Court of Common Pleas, after a preliminary hearing before a Magisterial District Judge) and a license case before PennDOT, 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: Mercer County public records, Mercer County arrest records, Mercer County warrants, Mercer County inmate search, Mercer County criminal records, Pennsylvania arrest records and Pennsylvania inmate search.
The DUI Law in Pennsylvania
In Pennsylvania the offense is DUI, and the limit is 0.08.
Driving in Pennsylvania is consent to a breath or blood test when an officer has cause to suspect DUI; the license case that follows a refusal or a failed test is run by PennDOT, separately from the criminal case.
For charging and sentencing, Pennsylvania counts prior offenses within 10 years.
Who Makes DUI Arrests in Mercer County
The Mercer County Sheriff's Office and the agencies that report for Hermitage, Sharon, Grove City, Greenville, Farrell, Sharpsville and four more cities make the DUI arrests in Mercer County.
The FBI's agency list also places one state police unit, three state agencies, two other agencies and two campus police departments in Mercer County (the arrest records guide names each one); the Mercer County State Police makes the arrests on the state highways.
Together, the 14 agencies in Mercer County with all twelve months of 2024 on file reported 2,206 arrests to the FBI that year, all offenses together; the FBI's count for Mercer County does not break DUI out.
Booking After a DUI Arrest in Mercer County
A driver arrested for DUI and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Mercer County Sheriff's Office, held about 230 people on an average day in 2023 by the Vera Institute of Justice's count and has a jail page SearchSystems verified at mercercountypa.gov/sheriff, phone 724 662 6135. The Mercer 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 Court of Common Pleas, after a preliminary hearing before a Magisterial District Judge.
The District Attorney's page SearchSystems verified is at mercercountypa.gov/districtattorney, phone 724 662 3800.
The court records page SearchSystems verified for the county is at mercercountypa.gov/ClerkOfCourts/default.htm, phone 724-662-3800.
Statewide, UJS Web Portal is the Pennsylvania courts' free statewide docket search.
The License Case
A DUI arrest starts two cases: the criminal one above and an administrative one over the license, run by PennDOT. The driving record, kept by the Pennsylvania Department of Transportation, carries the result of both.
The Records a DUI Leaves
- The arrest report: from the agency that made the arrest, under the Right-to-Know Law.
- The court file: from the Court of Common Pleas, after a preliminary hearing before a Magisterial District Judge, kept by the Prothonotary for civil cases and divorces and the Clerk of Courts for criminal cases.
- The driving record: from the Pennsylvania Department of Transportation.
More on each: Mercer County arrest records, Mercer County police reports and Mercer County court records.
Frequently Asked Questions
What is the DUI limit in Pennsylvania?
0.08 percent blood alcohol.
Where is a DUI case from Mercer County heard?
In the Court of Common Pleas, after a preliminary hearing before a Magisterial District Judge, brought by the District Attorney. The court records page SearchSystems verified for the county is at mercercountypa.gov/ClerkOfCourts/default.htm.
Where is a person arrested for DUI in Mercer County held?
At the county jail, run by the Mercer County Sheriff's Office, if kept in custody.
Who handles the license after a DUI arrest in Pennsylvania?
PennDOT, in an administrative case separate from the court case.
How long does a DUI count as a prior in Pennsylvania?
10 years.
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.