average age of supreme court justices at appointment
Demographics of the Supreme Court of the United States The average age of the Court as a whole fluctuates over time with the departure of older justices and the appointment of younger people to fill their seats. The average age of the Court is 72Â years. Just prior to the death of Chief Justice Rehnquist in September 2005, the average age was 71. After Sonia Sotomayor was appointed in August 2009, the average age at which current justices were appointed was about 53 years old.