The best thing to do is to google it. I live in a fairly small town and thought that there weren't any other transgenders in the area. When I finally googled it, I found a group right in town.
Generally speaking, there isn't a lot out there publical. Even active groups try to keep things private and respect people's needs for it. Looking on line won't hurt and you may be surprised. I found a Dr. that way who has been working with transgenders and codes hormones so that they will be covered by insurance.
Don't give up on finding a group. You may be pleasantly surprised.
sam2