Saint-Placide (French pronunciation: [sɛ̃ plasid]) is a municipality in the Laurentides region of Quebec, Canada, part of the Deux-Montagnes Regional County Municipality, along the north shore of the Ottawa River.

In 1853, its post office opened, and in 1855, the Parish Municipality of Saint-Placide was formed.

[5] A wharf, built in 1867, allowed vessels of the Ottawa River Navigation Company to take delivery of wheat at that time in the region.

The Oka Express goes to the Deux-Montagnes station and Terminus Saint-Eustache Population trend:[6] Private dwellings occupied by usual residents: 716 (total dwellings: 862) Mother tongue: The Commission scolaire de la Seigneurie-des-Mille-Îles (CSSMI) operates Francophone public schools.

[7] École secondaire d'Oka in Oka provides secondary education.