U.S. District Courts
In the Federal court system, the district courts are the "lowest" courts. Cases usually start in district court and are decided there. The circuit courts are courts of appeal. That means that you can appeal a district court's ruling to the circuit court (and then to the Supreme Court, if you still don't like the ruling). In that sense, the circuit courts are "higher" than the district courts.
It really depends what kind of courts you are talking about and where the courts are. If the courts are federal, then a district court is a trial court and a circuit court is an appeals court, which may review a trial decision from a district court. For state courts, the difference between a district court and a circuit court will depend on what state the courts are in. Many states have courts called "district court" and "circuit court," but what kinds of cases these courts handle differs state to state.
(in the US) It is the various US District courts.
Federal district courts have jurisdiction over trials. Federal appeals courts have jurisdiction over appeals from the federal district courts.
There are 11 United States Courts of Appeal. One such court sits in each of the eleven numbered US District Court circuits. These court have appellate jurisdiction over the 94 subordinate U.S. District Courts.
district court
There have been millions of court cases brought in federal district courts.
Federal district court.
District courts are responsible for hearing a wide range of cases, including civil and criminal cases, family law matters, probate issues, and more. They are often the first level of trial courts in the judicial system and handle cases within a specific geographical area or jurisdiction. District courts also handle initial legal proceedings, such as arraignments and bail hearings.
In North Carolina, traffic violations are handled by district courts. In Iredell County, there are two district courts - one is Statesville and one in Mooresville. If you have a traffic citation, it should tell you which district court is handling your ticket. The phone number for the Iredell County District Court in Statesville is 704-878-4204. The phone number for Iredell County District Court in Mooresville is 704-664-1118. See the related Iredell County Courts Directory link for more information on these courts, other courts in North Carolina, and both local and statewide court resources.
The U.S. District Courts since that court is the main trial court.