James K. Polk was 49 when he became president.
He was 58 when he became president.
James Monroe was 59 years old when he became president in 1817 James Monroe was 67 the last year he was president
James Madison became president on 1808 to 1812. Then he was reelected from 1812 to 1816James Madison was President from 1809-1817.
He was 42 years old when he became president.
He was about 6 weeks short of being 66 when he became president.
The age he was when he became a president is 48
25 when he became a lawyer, 57 when he became president
Here is the whole life of James Buchanan. James Buchanan was born on April 23,1791 in a log cabin. He is the only president to never be married. In 1857 Buchanan became the 15th president of the United States. In 1861 he left the White House and Abraham Lincoln became president. James Buchanan died on June 1,1868 when he was 77 years old.
He is 52 yrs. old when he became 3rd President of the Philippines.
When Theodore Roosevelt became president he was only 42 years old he was the youngest president so far.56
Johnson was 55 years, 2 months and 26 days old when he first became US President.