NORTH Miss. – (WCBI) Bulldogs and Rebels make up two of the smartest cities in the country. A national study shows that both Starkville and Oxford made the top 100 list. Luminosity, based out of San Francisco, conducted a national study for residents between the ages of 18 and 75. They used five brain games to measure cognitive skills. Those include memory, processing, and attention span among other things. Starkville came in at 34, while Oxford came in 40 spots lower at 74. Ithaca, New York is the smartest city in America.