One of the reasons why the Ashley Madison hack has swept through the US' imagination to such a profound degree is how all-encompassing it seemed. The hack clawed its way into communities all across the country — well, not quite every community.

Gawker's Gabrielle Bluestone has uncovered that there are precisely three ZIP codes across the country that have no record of Ashley Madison users. That's ZIP codes, not area codes. And what do they have in common? They're partially lacking two things: the internet and a large number of people.

Gawker's discovery highlights a pretty dark truth. These three ZIP codes are probably the only ones in the US that don't house spouses looking to cheat — at least not by using Ashley Madison.