There are so many people in my area playing Pokémon GO xD While driving home from work I witnessed quite a few or driving around town there will be people with their phone, even a tablet, out near a stop or a gym. I took a look at a couple of their phones while driving by and it's definitely the GO map. It makes me laugh. I know at some point I will definitely run into one of these "trainers" because with so many walking around, how can I not? Also, gym battles I witness frequently... there's one right near my house, which I was leading a couple days ago but decided to work on my Pokémon after I was beat by the servers ( xD ), and it's frequently occupied (and unnocupied) , this morning it wasn't and then same person who had it yesterday re-claimed it. There's almost no Team Mystic players in my town, but there's a few on my way to work.
Most people in my area also seem to have Vaporeon... the majority of gyms are covered by Vaporeon. I've seen 1 (maybe 2?) Flareon and 1 Jolteon. The highest CP I have seen is over 1,000. I'm thinking about trying to stabilize a couple of gyms that my team has already overridden instead of trying to claim more gyms, especially considering that there aren't many teammates near me.
My highest CP is actually a Vaporeon ^ xD Eevee are really common over here, as well as, Pidgey, and then Weedle.
As for Pokémon popping up while walking around my house. I've only had one without incense and it was a Weedle on the bathroom sink while I was getting ready for my day.
It is a fun game, hopefully it will only get better from here.