Federal Courts
Federal district courts and courts of appeals do most of the judiciary's daily work. They handle the volume of federal litigation that gives constitutional and statutory law practical force.
Lower federal courts matter because they are where most federal law is actually argued, applied, and tested. They are the working judiciary beneath the Supreme Court's selective docket.
Key Elements
- District courts are trial courts in the federal system.
- Courts of appeals review lower-court decisions.
- Most litigants experience the judiciary below the Supreme Court.
- Federal courts interact constantly with states, agencies, and national law.
Trial and Appellate Tiers

District courts hear cases first, while appellate courts review legal decisions and develop broader doctrine within their circuits.
The Working Judiciary
Because the Supreme Court hears so few cases, the lower federal judiciary carries most of the practical work of constitutional and statutory interpretation.
Connection to States
Federal court geography overlaps the states in important ways, making judicial structure another point where the national system becomes visible on the map.
Questions Worth Answering
Are federal courts the same as state courts?
No. Federal courts are part of the national judiciary, while state courts operate under state constitutions and state law, though the two systems often intersect.

