I don't know if you could tell the difference between rural MN and rural MI, but as of a few years ago when we lived there, no question Minneapolis felt different from the SE MI metro. People were more diffident. Also the drinking culture was stronger, which was supported in the consumption data. I would argue that it's Cities that have developed unique culture more than states. Not least because a city may have or have had a dominant industry that draws a particular kind of worker. A movie/entertainment industry town like LA is naturally going to develop a different cultural set than a manufacturing center like Detroit, or an oil industry dominated town like Houston, financial center like NYC etc. Climate can be a driver also. A place like Minneapolis were you can freeze to death pretty easily if you are not at least a little bit careful leads to a certain level-headedness you don't necessarily get other places.