It's the rural countryside around here that put up gigantic Trump posters on their farms, so unless you're talking about some other definition of bigotry, I don't you can generalize "rural" as "not bigoted."

Also: I have never had trouble getting jobs in the Bay Area, though I moved before I turned 45. I did however work with people who were late 40s/early 50s and engineers, so I didn't see a huge age prejudice.