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.
Pete Buttigieg
Peter Paul Montgomery Buttigieg (; born January 19, 1982) is an American politician, serving as the 32nd Mayor of South Bend, Indiana, since 2012. A member of the Democratic Party, Buttigieg is a graduate of Harvard University, a Rhodes Scholar, and a veteran of the War in Afghanistan. He is a candidate for President of the United States in the 2020 election, and as such is the first ever openly gay Democratic presidential candidate. If elected, he would be the first openly gay president as well as the youngest elected at age 38, and the youngest serving at age 39.