I am specifically talking about the UC prompt:
Describe the world you come from - for example, your family, community or school - and tell us how has your world has shaped your dreams and aspirations.
I'm not a family person, but I have made a family this summer at a summer camp. Does that typically count when they say family? I know it's up to our own interpretations, but what do you guys know/think?
Well, the prompt says, "for example, your family, community or school", so your 'family' at camp should be fine to write about. It might also be much more interesting than a typical family story, and you've probably learned things there like teamwork, sharing, diversity issues, etc.
"I'm not a family person", sounds like a very sad situation!
Good luck in school and have fun!