Paternò is a comune in the Metropolitan City of Catania, in the Italian region of Sicily. With a population of 48,009, it is the third municipalit…Paternò is a comune in the Metropolitan City of Catania, in the Italian region of Sicily. With a population of 48,009, it is the third municipality of the province after Catania and Acireale. Paternò borders with the municipalities of Belpasso, Biancavilla, Catenanuova, Centuripe, Ragalna, Ramacca and Santa Maria di Licodia. Its only hamlet is the village of Sferro.