Sinio is a comune in the Province of Cuneo in the Italian region Piedmont, located about 60 kilometres southeast of Turin and about 45 kilometr…Sinio is a comune in the Province of Cuneo in the Italian region Piedmont, located about 60 kilometres southeast of Turin and about 45 kilometres northeast of Cuneo. As of 1 January 2017, it had a population of 529 and an area of 8.5 square kilometres.