Pokémon X and Pokémon Y

It depend on where exactly you live in US, in my case I live at NYC and I usually get around 5 connections when I go to school.

That's still not really all that many from what I've heard some games expect. My friend was telling me about some game a while back where to continue in it you HAVE to have StreetPass active, and you have to run into many people otherwise you just cannot continue in the game. They have to be unique too. That is terrible for the US.

Even if places like NYC had a lot of people with 3DSes on them, it still screws anyone who is not in a major city. NYC, LA, etc. might be big, but there's still a lot of open areas that do not have a ton of people in condensed space like NYC and such.