Quebec List of regions of Quebec Longueuil
Location of Montérégie
Coordinates: 45°23′N 73°06′W / 45.383°N 73.100°W / 45.383; -73.100Coordinates: 45°23′N 73°06′W / 45.383°N 73.100°W / 45.383; -73.100
CountryCanada Canada
ProvinceQuebec Quebec
Regional County
Municipalities (RCM) and Equivalent
Territories (ET)
14 RCM, 1 ET
 • Total11,851 km2 (4,576 sq mi)
 • Land11,132.34 km2 (4,298.22 sq mi)
 • Total1,507,070
 • Density135.4/km2 (351/sq mi)
Time zoneUTC-5 (EST)
 • Summer (DST)UTC-4 (EDT)
Postal code
Area code450, 579

Montérégie (French pronunciation: ​[mɔ̃teʁeʒi]) is an administrative region in the southwest part of Quebec. It includes the cities of Boucherville, Brossard, Granby, Longueuil, Salaberry-de-Valleyfield, Saint-Jean-sur-Richelieu, Saint-Hyacinthe, Sorel-Tracy, and Vaudreuil-Dorion.

The region had a population of 1,507,070 as of the 2016 census and a land area of 11,132.34 square kilometres (4,298.22 sq mi), giving it a population density of 135.4 inhabitants/km2.[1] With approximately 18.5% of the province's population, it is the second most populous region of Quebec after Montreal. The majority of the population lives near the Saint Lawrence River, on the south shore of Montreal.

Montérégie is known for its vineyards, orchards, panoramas, delicious products, and the Monteregian mountains. The region is both urban (second in terms of population in Quebec) and rural. The regional economy is based on agriculture and the production of goods and services. Tourism also makes up a significant portion of the economy.[citation needed]


Jacques Cartier named Mont Royal in October 1535.[3] Samuel de Champlain built several forts to protect the colonists against the Iroquois and against the English, who were colonizing New England, to the southeast.

The toponym comes from the latinized form of Mount Royal, mons regius. Montérégie is named for the Monteregian Hills, which are, in turn, named for Mont Royal (English: Mount Royal).

The term for naming the set of hills in the St. Lawrence Plain was originally created in 1903 in English by geologist Frank Dawson Adams to designate a new petrographic province.

Mount Royal on Montreal Island, although outside the Montérégie region, is one of the Monteregian Hills. In addition to Mount Royal, two other Montérégie hills are not located in Montérégie: Mount Mégantic, in Estrie, and the hills of Oka, in the Lower Laurentians.

Montérégie was populated by the Iroquois when the French began to colonize here in the beginning of the 17th century.

Some of the battles which decided the destiny of Canada took place in Montérégie. In the 1837s, patriots rebelled against British government troops.[4] The Province of Canada (also called a United Canada (French: Canada-Uni) was formed through the Union Act in 1840 and February 184, from the former provinces of Bas-Canada (Lower Canada) and Upper Canada.

Originally, the administrative territory of the Montérégie parishes were taken from the territory of the canonical Diocese of Saint-Jean-Longueuil.[citation needed]


The Montérégie comprises three administrative subregions, each consisting of its own Regional County Municipalities (RCM) or Equivalent Territories. The territorial administration of the region is conducted by three Regional Conferences of Elected Officers (French: Conférences régionales des élus) (CRE) separate and independent in their territory: Longueuil, Montérégie-Est (eastern RCMs) and Vallée-du-Haut-Saint-Laurent (western RCMs). Each sub-region is organized in the same way as other administrative regions of Quebec.

Regional County Municipalities

There are 14 Regional County Municipalities in Montérégie.

Carte montérégie.svg

Montérégie Est

There are nine RCMs in Montérégie Est. Its seat is McMasterville, and the president is Arthur Fauteux. Its territory occupies 7,122.92 square kilometres (2,750.17 sq mi) and there are 656,287 inhabitants, with a population density of 92.1/km2 (238.6/sq mi).

Regional County Municipality (RCM) Population
Canada 2016 Census[5]
Land Area Density
(pop. per km2)
Seat of RCM
Acton 15,594 579.80 km2 (223.86 sq mi) 26.9 Acton Vale
Brome-Missisquoi 58,314 1,652.08 km2 (637.87 sq mi) 35.3 Cowansville
La Haute-Yamaska 88,306 636.81 km2 (245.87 sq mi) 138.7 Granby
La Vallée-du-Richelieu 124,420 588.60 km2 (227.26 sq mi) 211.4 McMasterville
Le Haut-Richelieu 117,443 936.02 km2 (361.40 sq mi) 125.5 Saint-Jean-sur-Richelieu
Les Maskoutains 87,099 1,302.90 km2 (503.05 sq mi) 66.9 Saint-Hyacinthe
(formerly Lajammerais until January 2011)
77,550 346.04 km2 (133.61 sq mi) 224.1 Verchères
Pierre-De Saurel
(formerly La Bas-Richelieu until January 2009)
51,025 597.55 km2 (230.72 sq mi) 85.4 Sorel-Tracy
Rouville 36,536 483.12 km2 (186.53 sq mi) 75.6 Marieville


There are five RCMs in Vallée-du-Haut-Saint-Laurent. Its seat is Salaberry-de-Valleyfield, and its president is Yves Daoust. Its territory occupies 3,727.22 square kilometres (1,439.09 sq mi) and there are 435,436 inhabitants, with a population density of 116.8/km2 (302.6/sq mi).

Regional County Municipality (RCM) Population
Canada 2016 Census[5]
Land Area Density
(pop. per km2)
Seat of RCM
Beauharnois-Salaberry 64,320 471.26 km2 (181.95 sq mi) 136.5 Beauharnois
Le Haut-Saint-Laurent 22,454 1,173.51 km2 (453.09 sq mi) 19.1 Huntingdon
Les Jardins-de-Napierville 27,870 803.07 km2 (310.07 sq mi) 34.7 Napierville
Roussillon 171,443 423.82 km2 (163.64 sq mi) 404.5 Saint-Constant
Vaudreuil-Soulanges 149,349 855.56 km2 (330.33 sq mi) 174.6 Vaudreuil-Dorion

Equivalent territory

Equivalent Territory (ET) Population
Canada 2016 Census[5]
Land Area Density
(pop. per km2)
Seat of ET
Agglomeration of Longueuil 415,347 282.21 km2 (108.96 sq mi) 1,471.80 Longueuil

Native Reserves

The population of both of these reserves are majority-Mohawk, one of the historic Five Nations of the Haudenosaunee, or Iroquois League. Kahnawake was established south of Montreal in 1719 as a mission village. Akwesasne was established upriver by Mohawk leaders and their families in the mid-18th century, accompanied by French Jesuit missionaries. Akwesasne spans the boundaries of Canada and the United States, extending across the St. Lawrence River into New York State, where it is referred to as the St. Regis Reservation.

Major communities


  1. ^ a b c "Census Profile, 2016 Census: Montérégie [Economic region], Quebec". Statistics Canada. Retrieved November 24, 2019.
  2. ^ a b "Montérégie, Quebec (Code 2435) and Quebec (Code 24) (table). Census Profile". Canada 2011 Census. Ottawa, Ontario: Statistics Canada. 2012-05-29. Retrieved 30 June 2012.
  3. ^ The Voyages of Jacques Cartier [Original Diary]. By H.P. Biggar. F.A. Acland Printer to the King's Most Excellent Majesty: Ottawa 1924. p.155
  4. ^ Solange Hamel. Les patriotes oubliés de la Montérégie, 1837, Saint-Alphonse-de-Granby : Éditions de la Paix, 2003, 129 pages (ISBN 2-922565-88-2).
  5. ^ a b c "Population and Dwelling Count Highlight Tables, 2016 Census". Statistics Canada. Retrieved November 26, 2019.