Based on an unpublished ethnographic study, several surnames are highly distinctive to this town; such that if encountered anywhere in the world, could likely be traced back to Mirabello: Centritto, Fantacone, Iademarco, Iafigliola, Margiasso, Spicciati, Sulmona, and Volpacchio.
Emigration has occurred mostly to the United States, with a focus to Central New York, California, and Florida.