And there you have it. Those are the last vestiges of the US left untouched by Ashley Madison — though of course there is the possibility that there are other bastions of innocence that have fake accounts registered to them. Even so, the ubiquity of Ashley Madison is striking.

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.

Here they are:

Nikolai, Alaska (99691) — Population: 94 (2010 Census)

Perryville, Alaska (99648) — Population: 113 (2010 Census)

Polvadera, New Mexico (87828) — Population: 269 (2010 Census)

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Also read: A chart made from the leaked Ashley Madison data reveals which states in the US like to cheat the most

Also read: A chart made from Ashley Madison data reveals 25 cities where the most people want to cheat