The most extensive list I have found is the one at McCall's Quick Quilts. They are listed by month, but the state is highlighted so you can pick out your area easily.
http://quickquilts.com/shows/index.html
This one is by state, though most dates have past. Might be good for next year.
http://www.festivals-and-shows.com/quilt-shows.html
This is the Mancuso listing for the year and if you can get to any of these shows, by all means GO!
http://www.quiltfest.com/