I go to a Christian church that is geographically situated in an urban area around a bunch of college campuses. Some of my friends from this church are:

* A heart surgeon in residency

* A guy who does flooring / carpentry

* A physics professor

* A bass violin player

* An actuary

* A piano tuner

* A computational biology post-doc

We have fun conversations and other than a foundational worldview alignment tend to have very different perspectives on politics/life choices/etc. Our church could be more diverse in many different ways but it certainly is diverse socioeconomically and I have benefited enormously because of these friendships.