How many justices make up the Supreme Court?

The Supreme Court of the United States is composed of nine justices. This structure has been in place since 1869 and includes one Chief Justice and eight Associate Justices. The number of justices is determined by Congress, and although it could be changed through legislation, it has remained consistent at nine for over 150 years. This composition allows for a diverse range of opinions and interpretations of the law, which is crucial for a balanced judicial system. Each justice serves a lifetime appointment, which is intended to insulate them from political pressure and ensure judicial independence.