Rivière-des-Prairies was a municipality that was annexed by Montreal, Canada in 1963. On January 1, 2002 it became part of the borough of Rivière-des-Prairies–Pointe-aux-Trembles–Montréal-Est. On January 1, 2006 Montreal East demerged, and the borough became Rivière-des-Prairies–Pointe-aux-Trembles. The borough is known for its high concentration of Italians in most of the neighborhoods, and Haitians in the others.