Illzach () is a commune in the Haut-Rhin department in Alsace in north-eastern France. It is located in the north side of the Mulhouse metropolitan area, and forms part of the Mulhouse Alsace Agglomération, the inter-communal local government body for that area. Population See also Communes of the Haut-Rhin département References External links Official website Communes of Haut-Rhin