Saint-Bruno-de-Montarville is an off-island suburb of Montreal, in southwestern Quebec, Canada, on the south bank of the Saint Lawrence River just east of Montreal. It lies on the west flank of Mont Saint-Bruno, one of the Monteregian Hills. The population as of the Canada 2021 Census was 26,273.

Area codes 450, 579, and 354 are telephone area codes in the North American Numbering Plan in the Canadian province of Quebec, encompassing the off-island suburbs of Montreal, as well as the rest of the Montérégie region southward to the border with New York state. Among the cities in the numbering plan area are Laval, Longueuil, Terrebonne, Saint-Jean-sur-Richelieu, Brossard, Repentigny, Saint-Jérôme, Granby, Blainville and Saint-Hyacinthe.