James K. Polk – 143.4
James K. Polk served as President of the United States from 1845 to 1849, becoming the country’s 11th president during that time period. He had an IQ of 143.4 points, which was above average. Moreover, it is worth noting that his inauguration as President was the first ever to be broadcast live on television by way of the telegraph system. Polk is most well-known for leading the United States to victory in the Mexican War in the early nineteenth century. During his presidency, two significant events in the United States’ territorial expansion occurred: the Cession of Mexico in 1848 and the acquisition of the state of Texas.

James K. Polk