Mont-Saint-Hilaire, Quebec

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For other uses, see Saint-Hilaire (disambiguation).
Skyline of Mont-Saint-Hilaire
Location within La Vallée-du-Richelieu RCM.
Location within La Vallée-du-Richelieu RCM.
Mont-Saint-Hilaire is located in Southern Quebec
Location in southern Quebec.
Coordinates: 45°34′N 73°12′W / 45.567°N 73.200°W / 45.567; -73.200Coordinates: 45°34′N 73°12′W / 45.567°N 73.200°W / 45.567; -73.200[1]
Country  Canada
Province  Quebec
Region Montérégie
RCM La Vallée-du-Richelieu
Constituted March 12, 1966
 • Mayor Michel Gilbert
 • Federal riding Chambly—Borduas
 • Prov. riding Borduas
 • Total 45.50 km2 (17.57 sq mi)
 • Land 44.29 km2 (17.10 sq mi)
Population (2011)[4]
 • Total 18,200
 • Density 410.9/km2 (1,064/sq mi)
 • Pop 2006-2011 Increase 15.8%
 • Dwellings 7,406
Time zone EST (UTC−5)
 • Summer (DST) EDT (UTC−4)
Postal code(s) J3H
Area code(s) 450 and 579
A-20 / TCH

Route 116

Mont-Saint-Hilaire is an off-island suburb of Montreal in southeastern Quebec, Canada, on the Richelieu River in the Regional County Municipality of La Vallée-du-Richelieu. The population as of the Canada 2011 Census was 18,200. The city is named after the Mont Saint-Hilaire.

A significant deposit of the semi-precious mineral sodalite is located near Mont-Saint-Hilaire.



Mont-Saint-Hilaire is served by the Mont-Saint-Hilaire commuter rail station on the Agence métropolitaine de transport's Mont-Saint-Hilaire Line. Local bus service is provided by the CIT de la Vallée du Richelieu.

In 1864, Canada's worst rail disaster occurred here when a passenger train passed a red signal and fell off an open swing bridge into the Richelieu River, killing around 99 people.


McGill's Gault Nature Reserve resides over the thousand hectares of primeval forest land, used for research and recreation purposes.

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