what is the maximum number of supreme court justices allowed
Supreme Court of the United States Article III of the United States Constitution does not specify the number of justices. The Judiciary Act of 1789 called for the appointment of six "judges". Although an 1801 act would have reduced the size of the court to five members upon its next vacancy, an 1802 act promptly negated the 1801 act, legally restoring the court's size to six members before any such vacancy occurred. As the nation's boundaries grew, Congress added justices to correspond with the growing number of judicial circuits: seven in 1807, nine in 1837, and ten in 1863.[69]
United States federal judge There are currently 874 authorized Article III judgeships: nine on the Supreme Court, 179 on the courts of appeals, nine on the Court of International Trade and 677 for the district courts.[12] Although the number of Supreme Court justices has remained the same for well over a century, the number of court of appeals judges has more than doubled since 1950, and the number of district court judges has increased more than three-fold in that period.[11]