The wikipedia page for Jeffrey City is fascinating: apparently the city was founded to support a uranium mine during the cold war, which closed after the uranium market collapsed. After the mine closed 95% of the city's residents left within three years, leaving it in its current state with just 100 residents (and not a single family among them) and only one business (a bar).
However, at the height of the city's population and optimism it apparently built out infrastructure to support a population many times the largest size it ultimately ever reached, so (for example) now it has a huge high school with an Olympic sized swimming pool despite the fact that not ONE person of high school age currently lives there.
There's no motel in Jeffrey City, but I was introduced to someone at the Lander Bar last night who offered to let me stay in a camper he apparently abandoned in Jeffrey City some time ago, and doesn't see any need to lock :)
I know this probably sounds sketchy to any of the readers of this blog who prefer more luxurious travel, but this guy was introduced to me as a personal friend by the guy I had the Burning Man conversation with, and almost everyone at the bar seemed to know and like the Burning Man guy, so I would actually put the odds of my being murdered as fairly low, like seriously under ten percent.