Check out the
Minnesota Trans Health Coalition. They have a number of great resources listed, (including trans friendly doctors and therapists) and they hold regular community forums discussing non-gender-binary issues. Also, one of their current board members, and the ex-board president identify as "Gender Queer", rather than "Trans". Actually, come to think of it, I believe the current board president does as well.
I know there was also a monthly meet-up for those who consider themselves non-binary for a while. It was being organized through MNBoyz (the Yahoo group for transmen) but was open to anyone.
You might also find some resources by contacting the U of MN's Gender Studies department. If you want to PM me I can also give you the names of a few non-binary folks who are open and active in the community, and they may be able to give you more details about what is going on.
Edit: O.K. I may have misread your original intent. But I stand by my suggestion of MNTHC as an excellent resource.