I've been wondering the same thing, I'm trying to meet up with caridsts in the NW England but don't really no a good go to place, I suppse it's quite are hobby
Best thing to do is to post ads on Craigslist for your area, or put flyers around in hopes that someone will see and want to meet up with you. That, or you could always just post your Magic on your personal Networking sites like Facebook or Twitter, and your friends may be interested. I too however have issues finding people into Cardistry. A lot of people don't know about it, and that is why you make it known by going out and performing also. Many ways to get people interested, but very few actually do it.