District courts are federal criminal and civil trial courts
There are two major judicial systems in our nation. There are fifty State judicial systems and one Federal Judicial System. In the federal system, trial courts are known as District Courts.
As of 2022, the United States has ninety-four District Court Houses, with each courthouse containing many individual courtrooms where federal trials are held. For example, the federal district court building in Los Angeles is a 10-story building containing 24 separate courtrooms.
After a trial is completed, both sides have the right to appeal the rulings made at the district court level to a federal appeals court.