List of presidents of the United States by age
The median age upon accession to the presidency is 55 years and 3 months. This is how old Lyndon B. Johnson was at the time of his inauguration. The youngest person to assume the office was Theodore Roosevelt, who became president at the age of , following William McKinley's assassination; the oldest was Donald Trump, who was old at his inauguration. The youngest person to be elected president was John F. Kennedy, at of age on election day; the oldest was Ronald Reagan, who was old at the time of his election to a second term.
List of vice presidents of the United States by age
The oldest living vice president is Walter Mondale, born on January 5, 1928 (age ). He also has the distinction of having the longest post-vice presidency in U.S. history, currently at . The youngest living vice president is the incumbent, Mike Pence, born on June 7, 1959 (aged ). The shortest-lived vice president was Daniel D. Tompkins, who died at the age of , only 99 days after leaving office. The longest-lived was John Nance Garner, who died on November 7, 1967 at the age of .