Don't need to explain me what demographics means, but even after studying your exlanation in detail I think it 100% fits what can be understood as star demographics, transferring your explanation of a "study about stars".. maybe it is because I have read too many things in this area but "What is the distribution of stars visible" feels off, and I also find the nit picking on how to do titles right off.
Anyway, the question was, to understand the other side better: What did you expect? (Not please explain me demographics in its original meaning :( )
Btw, "population of stars" is what it is exactly about and the term since almost a century: https://en.m.wikipedia.org/wiki/Stellar_population