Funny you mention that, whenever I'm asked the zip code, I spit out 82224. It's centered around Lost Springs, Wyoming, which is one of the most sparsely populated parts of the country. I've passed that zip code on to family and friends over the years in hopes they will do the same.
It's amusing to think about the head-scratching that must go on when retailers try to figure out why so many people from that area are apparently visiting their stores.