John F. Kennedy (46)
Only two U.S. Presidents were in their 40's at the end of their presidencies; both were assassinated.
Theodore Roosevelt, age 50, became the youngest ex-president when he left office in 1909.
The youngest president to die in office was President John F Kennedy.
JFK died the youngest from assasination
John F. Kennedy was indeed our youngest elected president. Teddy Roosevelt was our youngest president because he became president when McKinley was assassinated.
JFK
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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.)
John F. Kennedy at 46, followed by James Garfield at 49. They were both assassinated in office. The youngest president to die a natural death was James K. Polk who died of cholera at 53.
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).
Theodore Roosevelt was the youngest president, entering office at the age of 42.
Kennedy(43) was the youngest elected, but Teddy(42) was the youngest to take office (He was originally the VP).
Theodore Roosevelt was the Vice President under William McKinley and was the youngest president to hold officer when McKinley was assassinated. John F. Kennedy was youngest president elected to office.