Hi, FaerieGirl.

I'm going to suggest Walmart and Sam's Club, and Trader Joe's -- just from reading these here forums -- ! and there's a GreenBeanz somewhere in Northern California (I think) that's completely an LC store. Should be easy to find on a websearch with that name. California's a pretty big state, you might want to specify what part you're interested in?

Hope that helps.

PS: I'm going to port your post in the Local LowCarbing Support::US forum, I bet you'll get much better answers there.
PPS: LaTortilla Factory is actually located in Santa Rosa, CA, wherever that is!