You can assume absolutely anything you want to about a community based on the appearance of its people, but that won't do you any good. It's not until you really take the time to observe how people interact and get to know their routines and their beliefs and exactly what thoughts are behind their actions, that you really get to know a community. I think  a good place to observe how people in a community is at the gym. Generally, no more than one person can use a treadmill or another machine at the same time, but that doesn't mean people aren't interacting elsewhere around the gym. Another good place to observe would be a coffee shop. It would be interesting to see how customers interact with each other. I also think a sports team would be a good community to observe. When I played soccer in high school, we were all family. A different kind of friendship takes place within a sports team community.