Again, I'm not counting a show that doesn't "stay in place". Supernatural doesn't feel like a rural show, it feels like a "on the road/road-trip" show. Sure they never go to a city, but they're almost always on the go. Road trip feels like it's own separate environment from rural or urban. It may have nothing but rural settings, but it's always some new town. Supernatural is good, but it just doesn't feel like it fits the actual premise except in the loosest, not in the spirit of the question terms and people are just breaking the spirit gleefully because it's a show they love and it "fits if you squint."