Calvin Coolidge – IQ 141.6

In 1924, when Calvin Coolidge assumed the White House as the 30th US President, he had a quiet and remarkable personality. Even though his 141.6 IQ is right in the middle as far as the average for the American leaders goes, Coolidge impacted his country. To this day, he is remembered by many as the champion of the poor and the middle class.

Besides, succeeding Harding seemed to be pretty challenging for him, primarily because of his predecessor’s policies left behind. But Coolidge successfully restored public confidence in the federal government.