How many US Supreme Court justices have been white males?

Four. There have only been four women, total, on the US Supreme Court in the nation's history. President Reagan appointed Sandra Day O'Connor as the first female justice in 1981.

• Sandra Day O'Connor (1981 - 2006, retired)
• Ruth Bader Ginsburg (1993 - active)
• Sonia Sotomayor (2009 - active)
• Elena Kagan (2010 - active)