How many seats are on the Supreme Court?

The Supreme Court of the United States is composed of nine justices. This number has been established since the Judiciary Act of 1869. This structure ensures a balance in the court's decisions and allows for a diverse range of opinions, which is essential for interpreting the Constitution and federal law. The nine justices serve lifetime appointments, providing stability and continuity in the judicial system.

While other numbers, such as 7, 11, or 13, may have been used in historical contexts or proposed in various legislative discussions over the years, the current and established number of justices on the Supreme Court is nine. This has been critical in maintaining the integrity and function of the highest court in the United States.