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.
Eisenhower's farewell address
On January 20, 1961, Eisenhower served as a president for two full terms, making a total of eight years, and was the first U.S. president to be term-limited from seeking re-election again. He had overseen a period of considerable economic expansion, even as the Cold War deepened. Three of his national budgets had been balanced, but spending pressures mounted. The recent presidential election had resulted in the election of John F. Kennedy, and the oldest American president in a century was about to hand the reins of power to the youngest elected president.