The wealthy people I know, typically, on casually meeting them, you'd never know. They don't buy expensive clothes, most drive nice, but not special trucks, don't take flashy vacations, and many, their home is on the nicer side of average, but they really appear to be typical middle-class people. It's when you find out they have 200 over the road trucks, or 100-200 pieces of heavy equipment, that are paid for, that you realize they are better off. Another minor point, I've noticed, they often have 1 main business, but dabble in others, typically, (mind you, I'm dealing with mostly construction or trucking people) either minor real-estate stuff, or something else. I also will point out, the majority I know, are not college degree folks. Also, I would place the ones I meet, at 40-60 years old. Oh, and of these people, all of them still go to work every day (of coarse that's how I meet them, and that screws the numbers)
Not really on topic, but I would say, they typically are more likely to be religious.
I'm 100% going to admit that I see a small percentage of the US population, and I'm not saying any of this holds true once you leave my small part of the world.