Ranier used to be available everywhere in Southern California. I recall the blues singer Pearl Bailey praising it in radio commercials in the mid-sixties. But in the 1990s, it started to become scarce, and it disappeared for good at the beginning of this century.
According to Wikipedia, Pabst is currently brewing Rainier beer in Irwindale, CA, and shipped more in 2023 than any year since they bought Rainier in 1999.
I moved from Oregon to Arizona in 1985. I don’t know if Rainier is sold here, but I haven’t looked for it either. Maybe I will next time I go to the store.