There have been only three periods when five former American presidents were alive at the same time:
- March 4, 1861-Jan. 18, 1862: Martin Van Buren, John Tyler, Millard Fillmore, Franklin Pierce, James Buchanan
- Jan. 20, 1993-April 22, 1994: Richard Nixon, Gerald Ford, Jimmy Carter, Ronald Reagan, George H.W. Bush
- Jan. 20, 2001-June 5, 2004: Gerald Ford, Jimmy Carter, Ronald Reagan, George H.W. Bush, Bill Clinton
Herbert Hoover lived for 31 years after leaving office; James Polk lasted only three months.