The actual village of Châteauguay was created in 1855, after the abolition of the seigneurie system in Quebec by the United Province of Canada.
Châteauguay is an off-island suburb of Montreal, in southwestern Quebec, located both on the Chateauguay River and Lac St-Louis, which is a section of the St. Lawrence River.
The land was first given to Charles Lemoyne by the governor of New France at the time, the Comte de Frontenac with the intention of setting up a seigneurie in the area.
Twelve different ethnic groups represent at least 1% of the population in Chateauguay.
Châteauguay is twinned with Cambrai, France; Châteaugay, France & Moose Jaw, Canada.
Since 1984, Châteauguay has been home to one of the largest HVDC-back-to-back stations in the world with an operating voltage of 140 kV and a maximum transmission rate of 1000 MW.
Châteauguay played an important part in the colonial history of North America. With the United States has declared war on Britain in 1812, Châteauguay was seen as little more than a good vantage point to post troops to defend Montreal against an invasion.
The Estimated Population of Chateauguay is 46,264.
In 1763 France relinquished its claims in Canada and Châteauguay was under British mandate.
The city’s local newspaper is Le Soleil. Châteauguay Express was shut down in 2014.