Donald Trump will make history when he is sworn into office today as the oldest President to take the oath of office.

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?

Theodore Roosevelt stands out among the youngest to be sworn in as president of the United ... in 1993; and Barack Obama, who was 47 at his first inauguration in 2009. John C.

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 ...