The University of California appears to have 10 campuses. Read the below and follow through with the link provided for those campuses. For the source and more detailed information concerning your...
There are 10 University of California Schools UC Los AngelesUC Berkeley UC RiversideUC MercedUC IrvineUC Santa BarbaraUC Santa Cruz UC DavisUC San DiegoUC San Francisco (only a graduate campus)
It depends on which University of California you're talking about. There are many (E.G., UCLA, UCSD, UCBerkeley...). You can usually find their demographics info on their respective home-pages.
You can obtain this information by clicking on the related links section (College Board) indicated at the bottom of this answer section and using the College Board site College MatchMaker search...