Lorraine is an off-island suburb of Montreal, in southwestern Quebec, Canada on the north shore of the Rivière des Mille-Îles in the Thérèse-De Blainville Regional County Municipality. There are no industries and only a very limited commercial district (comprising one medical center, one shopping mall, a golf course and arena); almost all houses are of the detached type. Furthermore, a large portion of the town territory is set aside as wild forest (Forêt du Grand Côteau); some bike/ski trails run through it. The town is divided into two areas, Uptown and Downtown (or Lorraine en haut and Lorraine en bas, colloquially, because the northern area is on higher ground).