I found this:

http://aspergers.meetup.com/cities/us/fl/longwood/

I signed up for a few clubs through meetup.com and found some great folks out there with kids like mine. It varies. Since the people make their own groups, it depends on where and when they want to meet. If you want to start your own group as well, then that is a good site to do it on. Good luck reaching out to others! It can be real rewarding. :)