The 44 Dumbest U.S. Presidents Ranked By IQ

42. James Madison: 160

Also touting an estimated 160 IQ was Jefferson’s replacement, James Madison. A brilliant president must have been a sign of the times! Madison attended Princeton University, though it was known as College of New Jersey at the time. Just a few decimal points behind Jefferson and Madison, the next president on the list didn’t take office until the ’60s…