I second the idea of asking around at your LQS (local quilt shops). Not only will they know about guilds, they might also know of non-guild groups you might enjoy. One of the LQS in my area has a classroom with "open sew" times, where quilters can sew and chat. For that matter, any quilting-related business (such as a longarmer for hire) might be able to direct you.
Good luck!