Most Presidents were under 60 by Inauguration Day.

In 1935, life expectancy was 65 years.

Franklin D. Roosevelt died on April 12, 1945, at the age of 63. He passed away in Warm Springs, Georgia, where he had gone to rest at his retreat. He was 51 years on his Inauguration Day in 1933.

Jimmy Carter is still alive, he is 99 years, his birthday is October 1. He was 52 years on Inauguration day in 1976.