Roosters are not legal where I live. We first thought he was a hen. I will try Farm Sanctuary, where is that located? I had also heard of Hosanna Boys Ranch in Castro Valley. However, I have heard that they don't take care of the chickens. It's not a safe place for my rooster. So, yes, I am looking for a safe sanctuary as well!
I know every situation is different, but I've been able to keep a rooster in the Oakland hills, where they're technically illegal. My boy sleeps in a mancave at night (a cat carrier in the crawl space of my house, next to the coop), which keeps him from waking me or my neighbors up. I also made a flyer for my neighbors with my contact info, to give them a way to contact me if he bother them, and everyone has been fine with it. Anyway, roosters aren't for everyone (and doing the above can make going a way more challenging), but if you're really attached to him, you might find a way to keep him.
Now, I'm trying to find a home for his son!