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.
Jefferson Thomas
Jefferson Thomas, the youngest of seven children, was born in Little Rock to Mr. and Mrs. Ellis Thomas. His parents named him after Thomas Jefferson, President of the United States. Thomas first attended Horace Mann High School, a segregated all-black school, where he was a track athlete. In 1957, he volunteered to be among the first group of black students to integrate all-white Little Rock Central High School for the 1957–58 school year as a sophomore.