What was the largest number of us presidents alive at one time?

Six

The greatest number of living current and former U. S. Presidents at one time is six. It happened three times, once per century beginning in the 19th century. The longest period by far has been the most recent at 1232 days.

March 4, 1861 - January 18, 1862

  • Martin Van Buren
  • John Tyler
  • Millard Fillmore
  • Franklin Pierce
  • James Buchanan
  • Abraham Lincoln

January 20, 1993 - April 22, 1994

  • Richard Nixon
  • Gerald Ford
  • Jimmy Carter
  • Ronald Reagan
  • George H. W. Bush
  • Bill Clinton

January 20, 2001 - June 5, 2004

  • Gerald Ford
  • Jimmy Carter
  • Ronald Reagan
  • George H. W. Bush
  • Bill Clinton
  • George W. Bush