Yes, I had friends from various backgrounds while in college. Being on a huge university campus is similar to being at an "all inclusive vacation resort" in that the majority of people only see each other as fellow students or vacationers.
While on campus we were pretty much in the same boat.
A kid who is going to college on a scholarship, government grant, or student loan lives in the same dorms as those whose parents are paying for their child. I didn't come from a rich family but never had a problem making friends if I wanted to. I was a RA in charge of a dorm floor, on the judicial board, a member of a fraternity, and my college sweetheart was Miss Black Indiana back when there use to be a Miss Black America contest during the 70s. Even as a freshman I had friends who were in grad school working on their Phd. During my youth and even now (personality and intellect) are the main determining factors on whether or not I choose to befriend someone.
Naturally if we're not "running in the same circles" odds are we'll never meet. This goes back to my analogy of being on campus or on a resort. During that period it's almost like everyone is on a level playing field. We were all students, eating pizza, wearing jeans, partying, and enjoying the freedom of not having parents in our daily lives. My college years contained some of my most wonderful times. Maybe my experience of being at a Big 10 university is different from what it might have been like if I had gone to a private college or something along the lines of Harvard, Yale, Princeton, or Columbia where many students come from families with "old money". :)