What courts have jurisdiction in new jersey? The judicial system of New Jersey features one federal district court, and within the state there are also many trial courts, some with subject-matter jurisdiction and others with general jurisdiction. The trial courts feed into the state superior court as well as finally, the court of last resort in the state, the state's supreme court.What is the address of the new jersey supreme court? New Jersey Supreme Court Contact Phone Number is : 973-645-3730. and Address is Trenton, New Jersey, United States of America.What is jersey city court code? Is the numerical name for the court because some courts have the same name such as Washington Township. If you think this answer helped you, please mark it as best answer. This answer is not intended to give legal advice or establish an attorney client relationship and is offered for general... The Court Code for Jersey City is 0906.What is new jersey court system? New Jersey Court System. The Judiciary, or justice system, is one of the three co-equal but independent branches of state government established in New Jersey by the 1947 state constitution. Courts are a very visible part of our legal system. Each year, about seven million new cases are filed in New Jersey's state-level courts.