Unlucky man, I graduated University last year and at least 4 guys that lived in my dorm room played pokemon (thats out of the 13 dorm room mates I was randomly placed to live with when I started Uni).This was like, never true for me. I haven't met any Pokemon fans at college. I think I knew more in HS.
So i'd say it's very true for me, I stopped playing completely in secondary school. But I jumped straight back onto it once I had loads of pokemon enthusiasts around me at uni.