Thanks for the info. It does seem like Agrigento has a lot of mandamenti though; 10 as opposed to 4 in Trapani.
They have 7 mandamenti: Agrigento, Palma di Montechiaro, Burgio, Canicattì, Santa Margherita Belice, Cianciana and Santa Elisabetta. Of course there are also stiddari operating there.