As of my last knowledge update in January 2022, the composition of the United States Supreme Court consists of nine justices. This number has been consistent for many years, and the court is composed of one Chief Justice and eight Associate Justices. However, please note that this information may change over time due to retirements or new appointments. For the most current and accurate information, it’s advisable to check the latest sources or the official website of the U.S. Supreme Court.