Last reviewed . Law current as of October 2026.
Mercer County separates its court buildings: criminal matters are listed at the Criminal Courthouse, 400 South Warren Street in Trenton, while the Civil Courthouse is at 175 South Broad Street. The 12-hour IDRC is not in Trenton but on Marketplace Boulevard in Hamilton. Northeast Corridor trains from Trenton and Princeton Junction run straight to Newark Penn. Younity, formerly WomanSpace, is the DCF-funded domestic violence program here, while Volunteers of America Delaware Valley runs the county's Abuse Intervention Program.
Key facts
- Courthouse
- Mercer County Criminal Courthouse, 400 South Warren Street, Trenton, NJ 08650 (Mercer Vicinage)
- 12-hour IDRC
- 550 Marketplace Blvd, Box 1193, Hamilton, NJ 08691, 732-808-0180
- 48-hour IDRC
- New Hope (Marlboro)
- DV program
- Younity (formerly WomanSpace); AIP: Volunteers of America, Delaware Valley
- Recovery Court
- 609-571-4200
- Municipal courts
- Judiciary directory
DWI
Town municipal court; IDRC at 550 Marketplace Blvd, Box 1193, Hamilton, NJ 08691. Read our New Jersey DWI guide.
Domestic violence and restraining orders
Family Part, Mercer Vicinage; Younity (formerly WomanSpace). Read our New Jersey domestic violence guide and our restraining order guide.
Drug charges
Mercer County Criminal Courthouse, 400 South Warren Street, Trenton; Recovery Court 609-571-4200. Read our New Jersey drug charges guide.
Indictable crimes
Mercer County Prosecutor, Mercer County Courthouse, P.O. Box 8068, Trenton, NJ 08650. Read our New Jersey indictable crimes guide.
Towns
Trenton, Hamilton, Ewing, Princeton, Lawrence, West Windsor.
This page provides general information about New Jersey law. It is not legal advice, and reading it or contacting us does not create an attorney-client relationship. Every case is different and no outcome is guaranteed.