US personalities vary by region, say researchers. It's pretty thin on the details, but luckily the original paper can be found online in full, A Theory of the Emergence, Persistence, and Expression of Geographic Variation in Psychological Characteristics. I haven't read the whole thing, nor do I know much about personality, so I have put the maps which illustrate regional variation in traits below the fold. But I do want to note the correlations between Openness and the following metrics on the state level:
