If by “family” you mean anyone other than a parent or relative with legal custody then you are not going to be able to establish CA residency for UC purposes. The rules are very strict. Read thru the info at any UC registrar site. For example http://www.ucop.edu/residency/10-things-undergrads.html and http://www.ucop.edu/residency/establishing-residency.html
The rules may be different at CSU; I’ll leave that for you to check.