High Quality Content by WIKIPEDIA articles! 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 the Monteregian Hills. The population as of the Canada 2006 Census was 24,388. It was merged with Longueuil in 2002 but de-merged in 2006.