Looking for information on who was the youngest President? The answer to who is the youngest President get tricky because there are technically two answers. When most people want to know who was the youngest President, they are referring to who was the youngest President ever elected. The answer to that would be John F. Kennedy, the 35th President in the history of the United States. Kennedy was 43 years old when he was elected to office. However, the youngest person to ever assume the role of President would be Theodore Roosevelt, who became President of the United States at the age of 42 after the assassination of President William McKinley.
Theodore Roosevelt became the 26th President of the United States in September of 1901 and he stayed in office until 1909. Prior to becoming the Vice President when President McKinley was elected in March of 1901, Theodore Roosevelt served as the Governor of New York. President Roosevelt is best known for leading the Progressive Movement. Unlike all other Presidents, who are limited to only two terms, President Roosevelt was eligible to run for another term because he had technically only been elected once. President Roosevelt decided not to run after his term ended in 1909, but he did attempt to run again in 1912 against current President William Taft. Roosevelt failed to grab the Republican nomination from Taft, which led to his creation of the Bull Moose Party.
John F. Kennedy was the President of the United States from 1961 through 1963. John F. Kennedy served in the United States House of Representatives and was a Senator from Massachusetts before he was elected President. When most people think of President Kennedy, his famous quote from his inauguration speech, which is "Ask not what your country can do for you-ask what you can do for your country" often comes to mind. President Kennedy became the youngest President to ever die when he was assassinated by Lee Harvey Oswald while his motorcade was passing through Dallas, Texas.