I am afraid that I am having the same problem. I live in the greater San Diego, California area, and I have only found one good Meetup group for adults with Asperger's syndrome. There are a few other Asperger's syndrome Meetup groups that I have signed up with, which have people closer to my age, but they are inactive with no Meetups scheduled. All of the autistic Meetups in San Diego are workshops for parents or "play dates" for autistic kids, both of which I am uninterested in. Most of them are also at least a 45 minute drive away from me, as well. It is just frustrating for me.