Riffian is a comune and a village in South Tyrol in northern Italy, located about 25 kilometres northwest of Bolzano. As of 30 November 2010, …Riffian is a comune and a village in South Tyrol in northern Italy, located about 25 kilometres northwest of Bolzano. As of 30 November 2010, it had a population of 1,306 and an area of 35.8 square kilometres.