There's a KMART in South Lake Tahoe, CA–I had to go there on an emergency during a ski trip. That store was sad as hell, pretty bad.
There's also a few more in some of those smaller towns in the larger area. Honestly, if they closed, I'm not sure what those residents would do. I would have been screwed if it weren't there. The closest Target or Walmart would have been over a hundred miles away.