Mercer County · court code 1110
Princeton Municipal Court
Princeton Municipal Court uses code 1110 and 400 Witherspoon Street. If older paperwork shows Borough code 1109, ask which record applies.
Court directory
Princeton Municipal Court contact information
Public court record
Court code: 1110
County: Mercer County
Roster-listed address: 400 WITHERSPOON ST, PRINCETON TWP NJ 08540
Confirmed physical address: 400 Witherspoon Street, Princeton, NJ 08540
Mailing address: Separate mailing address not confirmed.
Phone: 609-924-5042
Court fax: 609-924-5902
Court days: Monday afternoon; Tuesday morning and afternoon
Office hours: Monday through Friday, 9:00 AM–4:00 PM
Published court officials
Judge listed in the August 31, 2026 Judiciary roster: JOHN F MCCARTHY III
Municipal prosecutor: The state roster has no prosecutor field.
Appointed municipal prosecutor firm: KG Law Group LLC. Adopted January 27, 2026; this identifies the appointed firm, not an individual prosecutor.
Sources for these facts
Court code, county, roster-listed address, and judge: State List of Municipal Courts (roster dated August 31, 2026).
Physical address, phone, fax, office hours, and court sessions: Princeton Municipal Court (checked September 5, 2026).
Prosecutor firm appointment: Princeton Council final meeting detail, Resolution R-26-040 (checked September 5, 2026).
Prosecutor firm appointment note: Adopted January 27, 2026; this identifies the appointed firm, not an individual prosecutor.
Published filing snapshot: 24,610 total filings, including 3,941 moving-traffic filings, 45 DWI filings and 741 criminal filings for JULY 2025 - JUNE 2026. View the matched Judiciary report record “PRINCETON MUNICIPAL COUR”. These are historical court-wide counts, not an inference about a particular case or a municipality within a grouped report row.
Local guide
What matters about the Princeton Municipal Court listing
Match the current location to the current code
The official Princeton page publishes a Monday-afternoon and Tuesday calendar for the Witherspoon Street court. Use those details for code 1110, but confirm separately before applying them to older paperwork bearing code 1109. Sources: Physical address and court sessions: Princeton Municipal Court (checked September 5, 2026) · Princeton Borough Municipal Court — Historical status: Princeton Historic Preservation Commission (checked September 5, 2026). Open the Princeton Borough Municipal Court guide.
Before an appearance
Use the current notice and the actual charge
Keep the summons or complaint, later notices, and relevant records together. Check the court code, case or ticket number, date, and whether the notice requires an in-person or virtual appearance. For evidence requests and timing, use the municipal-court discovery and adjournments guide; for the charge itself, start with the traffic-defense overview, DWI guide, or criminal-defense overview.
Current-notice caveat: published addresses and calendars can change or may describe an office rather than the hearing instructions for one case. Follow the latest notice and call the court if it conflicts with this directory page.
Payment caveat: NJMCDirect lists eligible payment options, but paying can resolve a charge as a guilty plea. Understand the effect before using payment to dispose of a case.
Court directory
Other Mercer court guides
See all 13 Mercer County court codes and guides.
Court code 1101
East Windsor Municipal Court
Court code 1102
Ewing Township Municipal Court
Court code 1103
Hamilton Township Municipal Court
Court code 1104
Hightstown Municipal Court
Have the complete court notice ready.
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Source verification completed September 5, 2026 against the New Jersey Judiciary roster dated August 31, 2026 and the linked official sources checked September 5, 2026. Primary sources: State List of Municipal Courts (roster dated August 31, 2026) and Princeton Municipal Court (checked September 5, 2026) and Princeton Council final meeting detail, Resolution R-26-040 (checked September 5, 2026) and Princeton Historic Preservation Commission (checked September 5, 2026). This is source verification, not a representation of attorney review. Laws change; nothing here is legal advice for your specific case.