Mercier, Quebec
| Mercier | |
|---|---|
| Rue de l’Eglise in Mercier | |
| Location within Roussillon RCM | |
| Coordinates: 45°19′N 73°45′W / 45.32°N 73.75°W | |
| Country | Canada | 
| Province | Quebec | 
| Region | Montérégie | 
| RCM | Roussillon | 
| Constituted | July 1, 1855 | 
| Government | |
| • Mayor | Lise Michaud | 
| • Federal riding | Châteauguay—Les Jardins-de-Napierville | 
| • Prov. riding | Châteauguay | 
| Area | |
|  • Total | 46.60 km2 (17.99 sq mi) | 
| • Land | 45.96 km2 (17.75 sq mi) | 
| Population  (2021) | |
|  • Total | 14,626 | 
| • Density | 318.2/km2 (824/sq mi) | 
| • Pop 2016-2021 | 11.5% | 
| • Dwellings | 5,472 | 
| Time zone | UTC−5 (EST) | 
| • Summer (DST) | UTC−4 (EDT) | 
| Postal code(s) | |
| Area code(s) | 450 and 579 | 
| Highways | R-138 | 
| Website | www | 
Mercier (French pronunciation: [mɛʁsje] ⓘ) is a suburban town in southwestern Quebec, Canada, in the Roussillon Regional County Municipality. It is located on the Châteauguay River, southwest of Montreal. The population as of the Canada 2021 Census was 14,626.