Maybe. I suppose I've never questioned my assumption that you're more likely to find people high on the openness to experience scale in urban environments than rural. It's intuitively true to me, and it is the case that cities are more liberal, and "openness to experience" is generally seen as a common personality trait among liberal people, with the more liberal the person the higher on the scale they tend to sit. I'm not a psychologist or anything, so that's very possibly wrong, or "hubris" on my part. I'm too lazy to do actual research on this right now, but the geography section of this Wikipedia article seems to indicate a correlation with that personality trait and more urban states: https://en.m.wikipedia.org/wiki/Openness_to_experience

Agreed, and I have the same intuition. The research I mentioned seems to indicate that the questions being asked to gauge openness (among other things) were in fact biased, that's all.