The highest IQ was 228, according to Guinness Book of Records, this score belongs to the âsmartest' person in the world Marilyn vos Savant who scored it when she was 10 year old. This would, according to recent research, correspond to about IQ 185 at adult age.
The rest of the states on the list each have a white population of more than 90%. As for states with the smallest percentage of whites, Hawaii, Mississippi, Louisiana, Maryland, and Georgia comprise the top five. Here are the 10 states with the highest percentage of whites: Maine; Vermont; New Hampshire; West Virginia; Iowa; Wyoming; Idaho; Montana; Kentucky; North Dakota (Click for a list of 50 bizarre state laws.)
White people, and lots of them. According to Census data, these states are among the top 10 whitest, ABC News reports. New England comes in first with three states in which at least 96% of the population is white. A black man living in Vermont likens a non-white moving to the state to Jackie Robinson breaking baseball's color barrier.