Oncino is a comune (municipality) in the Province of Cuneo in the Italian region Piedmont, located about southwest of Turin and about northwest of Cuneo. As of 31 December 2004, it had a population of 93 and an area of .All demographics and other statistics: Italian statistical institute Istat.

The municipality of Oncino contains the frazioni (subdivisions, mainly villages and hamlets) Villa, Ruata, Ruera, Serre, Saret, Sant'Ilario, Arlongo, Paschie', Tirolo, Bigorie, Chiotti, and Porcili.

Oncino borders the following municipalities: Casteldelfino, Crissolo, Ostana, Paesana, Pontechianale, and Sampeyre.

Demographic evolution

References