www.madeevent.com throws some good trance parties every month. You can look at the NYC event section of tranceaddict here for info on whats going on.
http://www.tranceaddict.com/forums/s...85&forumid=26&
Haven't really been to many raves lately so don't know what the scene is like, but from the increase in the amount of parties either its coming back, or at the very least people are trying to bring it back. Trance scene is probably bigger in NYC than anywhere else in the US though.