Saint-YviSaint-Yvi is a commune in the Finistère department of Brittany in north-western France.PopulationInhabitants of Saint-Yvi are called in French Saint-Yviens. The population has been increasing quickly since the year 1975.GeographySaint-Yvi is located east of Quimper. Historically, the town belongs to Cornouaille. The river Jet forms its northern border.Map