He was 42 almost 43 years old.
When Theodore Roosevelt became president he was only 42 years old he was the youngest president so far.56
Theodore Roosevelt was a Republican. He was 42 when McKinley was assassinated and TR became President.
Theodore Roosevelt was the youngest president at 42 years old when he became President (after President William McKinley was assassinated and Theodore Roosevelt was McKinley's Vice President.
He Was 42 Years old when he Became President in 1901 and 50 when he left office in 1909.
42 years old
He was 42 years old when he became the 26th president. He was 46 when he was elected U. S. President in the fall of 1904.
When Theodore Roosevelt became President, he was aged 42. He was the youngest US President at that time.
Theodore Roosevelt was 42 years old when he assumed the duties of President of the United States. He became President in 1901 after the assassination of President William McKinley.
Theodore Roosevelt was never elected. After President McKinley was shot, Theodore became President at age 42. Theodore Roosevelt was 40 when he was elected Governor of New York in the fall of 1898. He was 42 when he was elected U. S. Vice President in the fall of 1900. He was 46 when he was elected U. S. President in the fall of 1904.
John F. Kennedy was the youngest president ever elected (43 years 236 days old).However, Theodore Roosevelt became vice president at a younger age (42 years 322 days old) and became president after McKinley's assassination and was technically a younger president than JFK.
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He was 43.