Theodore Roosevelt was the youngest president of USA. He was
(43 years,10months,18days) when he was elected as the president
John C. Breckinridge, who served under Franklin Pierce.
Kentucky
The youngest person to serve as President of the United States was Theodore Roosevelt, who assumed office at the age of 42, following the assasination of William McKinley. John F. Kennedy was the youngest when elected president and youngest who died.
Theodore Roosevelt was the youngest to serve. Jack Kennedy was the second youngest and the youngest to win by election.
He was the youngest person to be elected president (though not the youngest person to serve as president - Theodore Roosevelt was only 42 when he ascended to the presidency after William McKinley's assassination), as well as the first Roman Catholic to be elected president.
The youngest president to die in office was President John F Kennedy.
Technically John F. Kennedy was elected the youngest but the youngest president in office was Roosevelt. (Roosevelt was elected Vice President in 1900 and became President when President William McKinley was assassinated.)
Who_was_the_youngest_president_to_become_president
As of 2017, the youngest US president was Theodore Roosevelt, who was only 42 when he took office.
For the United States Presidential Campaigs the youngest presidential candidate eligible to take office if elected is of known record Brandon S. Dean. He registered his FEC Form 2 (Statement of Candidacy) in December of 2011. He was 34 years old. However, he will be 35 years old (the age necessary to be president) by November 6th, 2012. Source: www.showinguscitizenshowtorunforpresident.com
John F Kennedy was the youngest ex-president in our nation, he was 46 when he was assassinated. Teddy Roosevelt was the youngest living ex-president.
Um... no. The youngest president was Theodore Roosevelt (42) although he took office because he was the vice president of William McKinley, who was assassinated. The youngest president ever to be ELECTED was John F. Kennedy (43).