I'm sure there's quite a few JR's out west in sparcely populated areas. But for the eastern sections, I've seen videos of JR's from Winter Green, VA (A city sounding similar to that) with Comcast
as their cable provider. There's one in Syracuse, NY with a private apartment cable company. I thought I also saw one from Somerset, NJ (Definately not with Comcast because they have an IntelliStar).