The U.S. court system chart has two parallel tracks: a federal system created under Article III of the Constitution, and a separate state system in each of the 50 states. Both are organized as three-tier pyramids — trial courts at the base, appellate courts in the middle, and a court of last resort on top — with a handful of specialized courts sitting off to the side. Federal courts hear cases involving federal law, the Constitution, and certain disputes between citizens of different states. State courts handle everything else, which is most of what Americans ever encounter in court. State courts process roughly 66 million cases a year; federal courts handle a small fraction of that.
The Federal Track
Article III created the Supreme Court and gave Congress the authority to build the lower courts beneath it. What Congress built has three levels.
U.S. District Courts
The 94 U.S. district courts are the trial courts of the federal system. This is where federal cases begin, where witnesses testify, where evidence is introduced, and where a judge or jury decides the facts. Every state has at least one federal district; larger states have as many as four. The record created at this level is what higher courts review on appeal.1United States Courts. About U.S. District Courts
District judges share the work with magistrate judges, who are appointed by the court itself to renewable eight-year terms. Magistrate judges handle misdemeanors, issue warrants, conduct bail hearings, and manage pretrial matters in felony cases. In civil cases, they can preside over an entire lawsuit if all parties agree.
U.S. Courts of Appeals
A party who believes the trial court got the law wrong can appeal to one of the 13 U.S. courts of appeals. Twelve are organized geographically, each covering several states. The thirteenth, the U.S. Court of Appeals for the Federal Circuit, has nationwide jurisdiction over specialized subjects like patent disputes and certain government contract claims.2United States Courts. About the U.S. Courts of Appeals
Appeals courts do not hold new trials. No witnesses, no new evidence. A panel of three judges reviews the trial record and the parties’ briefs and decides whether the law was applied correctly. Their rulings bind every district court inside that circuit, so a Fifth Circuit decision controls how district judges in Texas, Louisiana, and Mississippi handle the same question going forward.3United States Department of Justice. Introduction To The Federal Court System
The Supreme Court
The Supreme Court of the United States sits at the top of the federal system with nine justices. Most of its work is appellate. Parties who lose in a court of appeals file a petition for a writ of certiorari asking the Court to take their case. The Court accepts about 100 to 150 of the more than 7,000 petitions it receives each term, focusing on cases that would resolve disagreements between circuits or raise questions of national importance.4United States Courts. Supreme Court Procedures
The Court also has a narrow slice of original jurisdiction. Under Article III, cases involving ambassadors and disputes where a state is a party, such as a border conflict between two states, can start at the Supreme Court without going through lower courts first.5Constitution Annotated. Supreme Court Original Jurisdiction
A Supreme Court decision binds every federal and state court in the country. When the Court denies certiorari, the lower court’s ruling stands, but a denial does not signal agreement with that ruling.
The State Track
State courts handle the vast majority of legal disputes Americans encounter: traffic tickets, divorces, landlord-tenant fights, personal injury lawsuits, and criminal prosecutions from misdemeanors to murder. Most states organize their courts into tiers that roughly parallel the federal structure, though names and details vary.
Trial Courts of Limited Jurisdiction
At the lowest level, courts of limited jurisdiction manage high-volume, lower-stakes matters: traffic violations, municipal ordinance violations, and small claims. Dollar caps in small claims court vary widely by state, from around $5,000 to $10,000 or more. These courts also handle preliminary proceedings in criminal cases, such as arraignments and bail hearings, before passing felony cases up.
Specialized state courts also sit at this level. Probate courts oversee the administration of estates, validate wills, manage asset distribution, and appoint guardians for minors or incapacitated adults. Some states fold probate into their general trial courts; others keep separate probate dockets.
Trial Courts of General Jurisdiction
Courts of general jurisdiction, often called Superior Courts or Circuit Courts depending on the state, are the workhorses. They can hear virtually any case not specifically assigned elsewhere, including major criminal trials, large civil disputes, divorce and child custody matters, and personal injury claims. They conduct full trials, either with a jury or in bench trials where the judge decides both the facts and the law.
Appellate Courts and the Court of Last Resort
Most states have an intermediate appellate court where a losing party can challenge the trial court’s legal rulings. These panels review the record for legal errors; they do not retry the case. The final authority on state law is the state’s court of last resort, usually called the State Supreme Court. Its rulings control how every lower state court interprets state statutes and the state constitution. From there, a losing party has no automatic right to further review. The only path forward is a petition to the U.S. Supreme Court, which succeeds only if the case raises a substantial federal question.
Which System Hears Which Case
Federal courts do not have open-ended authority. They can only hear cases that fall within specific categories established by the Constitution and federal statutes. For most readers, this is the practical question the chart answers.
Federal Question Jurisdiction
A federal court can hear any case arising under the U.S. Constitution, a federal treaty, or a federal statute. A lawsuit based on a federal civil rights violation, a federal criminal law, or an argument that a state law violates the Constitution belongs in federal court. This keeps federal law interpreted consistently by judges appointed specifically to handle it.6Legal Information Institute. Federal Question Jurisdiction
Diversity Jurisdiction
Federal courts can also hear civil cases between citizens of different states when the amount at stake exceeds $75,000. The statute requires complete diversity: no plaintiff can be a citizen of the same state as any defendant.7Office of the Law Revision Counsel. 28 USC 1332 – Diversity of Citizenship; Amount in Controversy; Costs
Concurrent Jurisdiction and Removal
Some cases qualify for both state and federal court. A plaintiff with a federal civil rights claim can choose to file in state court. But the defendant has a countermove. Under federal law, a defendant can remove a case from state court to the federal district court covering the same area, as long as the case involves a federal question or meets the diversity requirements. For diversity-based removal, there is an extra restriction: the defendant cannot remove if any properly served defendant is a citizen of the state where the lawsuit was filed.8Office of the Law Revision Counsel. 28 USC 1441 – Actions Removable Generally
Once a case is removed, it proceeds under federal procedural rules. The choice between systems affects the pace of litigation, the rules governing evidence disclosure, and the size and composition of the jury pool.
Specialized Federal Courts
Congress has created several courts outside the standard three-tier hierarchy to handle technical or narrow areas of law. Judges on these courts develop deep expertise in their subject area, which is the point of keeping these disputes out of general-purpose district courts.
U.S. Bankruptcy Courts
Bankruptcy courts operate as units of the federal district courts. They handle cases where individuals or businesses either liquidate assets to pay creditors or reorganize debts under a court-supervised plan. Bankruptcy judges serve 14-year terms rather than for life.9United States Courts. About U.S. Bankruptcy Courts
U.S. Tax Court
The Tax Court lets taxpayers challenge an IRS determination that they owe additional taxes without paying the disputed amount first. When the IRS sends a formal notice of deficiency, often called a 90-day letter, the taxpayer has 90 days to file a petition. This pre-payment review is what makes the Tax Court unique. In most other courts you have to pay first and sue for a refund later.10Legal Information Institute. Notice of Deficiency
U.S. Court of International Trade
This court has exclusive jurisdiction over civil cases involving customs law, tariffs, import duties, and trade regulations. If an importer disputes a tariff classification or challenges a trade-related agency decision, the case goes here instead of to a regular district court.11Office of the Law Revision Counsel. 28 USC Chapter 95 – Court of International Trade
U.S. Court of Federal Claims
When someone wants to sue the federal government for money, the Court of Federal Claims is usually the venue. The Tucker Act waives sovereign immunity for claims based on the Constitution, federal statutes, executive regulations, and government contracts. The court hears everything from military pay disputes and contractor claims to takings cases where the government has seized private property. For claims above $10,000 the court has exclusive jurisdiction; smaller claims can also go to a federal district court.12Office of the Law Revision Counsel. 28 USC 1491 – Claims Against United States Generally
Military and Surveillance Courts
The U.S. Court of Appeals for the Armed Forces reviews serious criminal convictions under the Uniform Code of Military Justice and has worldwide jurisdiction over anyone subject to military law.13USAGov. Court of Appeals for the Armed Forces The Foreign Intelligence Surveillance Court, created by Congress in 1978, reviews government applications for surveillance warrants related to foreign intelligence gathering. The FISC is composed of 11 federal district judges designated by the Chief Justice, each serving a maximum seven-year term.14Foreign Intelligence Surveillance Court. About the Foreign Intelligence Surveillance Court
Decisions from most specialized courts feed back into the regular federal appellate system. Bankruptcy appeals typically go to the district court or a bankruptcy appellate panel and then to the circuit court. Tax Court and Court of Federal Claims decisions are appealed to the appropriate circuit court or the Federal Circuit.
Administrative Law Judges
Not every federal dispute goes through the court system at all. Federal agencies employ administrative law judges to resolve disputes arising under the programs those agencies administer. The most familiar example is Social Security disability hearings: when a disability claim is denied, an ALJ conducts a trial-type hearing where the claimant presents medical evidence and testimony. ALJs also preside over disputes involving workplace safety violations, labor relations, energy regulation, and Medicare claims.15Federal Administrative Law Judges Conference. About the Nation’s Administrative Law Judges
Despite working for an executive branch agency, ALJs have decisional independence under the Administrative Procedure Act. The agency cannot dictate how they rule. If you disagree with an ALJ decision, the path to federal court is not immediate. Most agencies require you to exhaust internal appeals first. In the Social Security context, you must request review from the agency’s Appeals Council before filing a civil lawsuit in federal district court. The deadline for each step is generally 60 days after you receive notice of the decision.16Social Security Administration. Your Right to an Administrative Law Judge Hearing and Appeals Council Review of Your Social Security Case
How Judges Reach the Bench
Federal and state judges get their jobs in fundamentally different ways. All Article III federal judges, including Supreme Court justices, circuit judges, and district judges, are nominated by the President and confirmed by the Senate. Once confirmed, they hold office “during good behavior,” which is effectively a lifetime appointment. There is no mandatory retirement age. Removal requires impeachment by the House and conviction by the Senate. The Constitution also protects their salaries from being reduced while in office.17United States Courts. Types of Federal Judges
States use a patchwork of methods: partisan elections, nonpartisan elections, gubernatorial appointment (sometimes with legislative approval), legislative election, and merit selection under the Missouri Plan, where a commission submits a shortlist to the governor and the appointee later faces a retention vote. Many states use different methods at different court levels, so a state might elect its trial judges in partisan races and use merit selection for its supreme court.
How a Case Moves Through the Chart
The structure makes more sense once you see a case travel it. A federal criminal prosecution starts in a U.S. district court; a conviction can be appealed to the circuit court covering that district and then potentially to the Supreme Court. A state criminal case follows the parallel state track: trial court, intermediate appellate court, state supreme court, and only then to the U.S. Supreme Court if a federal constitutional issue is in play.
Civil cases add the jurisdictional choice. A contract dispute between a Texas company and a Georgia company over $100,000 could land in either state or federal court. If the plaintiff picks state court, the defendant can remove it to federal court under diversity jurisdiction. If the dispute involves only $50,000, federal diversity jurisdiction does not exist, and the case stays in state court regardless of where the parties live.
Specialized matters skip the standard entry points. A taxpayer fighting an IRS deficiency notice goes straight to Tax Court. A veteran challenging a benefits denial moves through the Board of Veterans’ Appeals and then to the U.S. Court of Appeals for Veterans Claims before potentially reaching the Federal Circuit. The system is designed so each type of dispute finds its way to judges equipped to handle it, which is also why the number of entry points on the chart is as large as it is.