What level do most federal cases begin?

Most federal cases begin in the U.S. District Courts, which are the general trial courts of the federal court system. Each state has at least one district court, and there are 94 federal judicial districts in total. These courts handle a wide range of cases, including civil and criminal matters involving federal law. If parties wish to appeal a decision from a district court, they can take their case to the U.S. Court of Appeals.