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How are state and federal courts organized in the United States?

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Wood-paneled courtroom with judge's bench, American and Nevada flags, wooden chairs and tables, and a mounted animal head above the bench in the Esmeralda County courthouse, Goldfield, Nevada. — Court Judge's bench in a courtroom in Nevada, U.S.

The United States operates under a dual court system, consisting of 51 separate judicial systems: one for the federal government and one for each of the 50 states.1

Federal Court System

The federal judiciary is organized hierarchically:2
* Supreme Court of the United States: The highest court, consisting of nine justices appointed for life. It primarily exercises appellate jurisdiction, though it holds original jurisdiction in specific cases involving foreign diplomats or states.34
* U.S. Courts of Appeals: Intermediate courts that review decisions from the district courts. There are 12 geographic circuits and one federal circuit.34
* U.S. District Courts: The primary trial courts where most federal cases originate.35
* Special Courts: These handle specific matters such as tax disputes, veterans' claims, and military justice.3

State Court Systems

State court structures are determined by individual state constitutions or legislatures. While they vary, most follow a similar hierarchy:65
* Trial Courts: Where the majority of civil and criminal cases are heard.5
* Intermediate Appellate Courts: Many states provide at least one level of appellate review.5
* State Supreme Courts: The court of last resort for matters of state law.16

State courts are the final arbiters of state law, but cases involving the U.S. Constitution or federal statutes may be appealed to the U.S. Supreme Court.16