I have never seen a homebrew shop anywhere in california. So I am not sure if they actually exist in the U.S. So where could I find ingredients to make beer locally?

So would like a Safeway or other grocer-market have stuff like this (by chance).
i dont want to order online.
Things needed I know : hops, yeast, barley, malt, etc.

Okay not online but Williams Brewing in the Bay Area has some real good stuff. If you are not finding a home brew store in CA then you are not looking. Cali has a lot of places to get your stuff.