Auxerre ( oh-SAIR, French: [osɛʁ] (listen)) is the capital of the Yonne department and the fourth-largest city in Burgundy. Auxerre's population today is about 35,000; the metropolitan area comprises roughly 92,000 inhabitants. Residents of Auxerre are referred to as Auxerrois.Auxerre is a commercial and industrial centre, with industries including food production, woodworking and batteries.