Kennedy was 43. Obama, 63, was born on Aug. 4, 1961. The 44th president is now the youngest president alive. He was also the fourth youngest presidents to enter office at the age of 47.

Bush, Donald Trump and Barack Obama. However, Clinton, 78, is the only former commander-in-chief who was in office during the 20th century. Who is the youngest living former president?

and Barack Obama, who was 47 at his first inauguration in 2009. Trump’s running mate, JD Vance, 40, became the nation’s youngest vice president since 1953, when Richard M. Nixon, who ...