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.
Presidents of the United States on U.S. postage stamps
Benjamin Harrison (August 20, 1833 – March 13, 1901) was the 23rd President of the United States, serving one term from 1889 to 1893. Harrison was born in North Bend, Ohio, and at the age of 21 moved to Indianapolis, Indiana, where he became involved with Indiana state politics. During the American Civil War, Harrison served as a Brigadier General in the Army of the Cumberland.