Good God is Pokémon Go popular. In just a little over a week, the game has surpassed Tinder in popularity. Not good enough? OK, it's more popular than porn. And after all, the Internet is for porn. But not all Pokémon are created equal -- and you don't need to be Ash Ketchum to understand that.
With that in mind, the people at Decluttr, a website that helps people resell their media and electronics, sifted through Google data to figure out which Pokémon are rarest in every state. To do that, the number crunchers "took phrases like ‘where is…’ and ‘how to find…’, paired them up with the Pokémon in the game and measured the volume of searches in each state."
TL;DR: people use Google to figure out where to catch the hard-to-catch Pokémon.