Ranking the Least Intelligent Presidents in U.S. History

George W. Bush

How savvy are U.S. presidents?

In a recent report, UC Davis educator Dean Simonton utilized historiometric strategies to appraise every president's IQ. Simonton dissected data from every president's accounts, addresses, and compositions that would show insight.


Simonton assessed four diverse IQ values for every president. At InsideGov, we arrived at the midpoint of every one of the four IQs to get our rankings of the 25 slightest insightful presidents in U.S. history. Note that President Obama was excluded in the study.

With a normal IQ of 128.5, these presidents are still savvy, yet the bar is set entirely high by the keenest presidents. For reference, the normal IQ for the overall population is 100.

This rundown is in no way, shape or forms conclusive, however, it ought to give a general review of every president's relative knowledge.