Urban agglomeration of Longueuil

Longueuil Boucherville Saint-Bruno-de-Montarville
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Urban agglomeration of Longueuil
Quebec MRC Longueuil location map.svg
Agglomeration Longueuil.PNG
Country Canada
Province Quebec
IncorporatedJanuary 01, 2002
County seatLongueuil
 • TypePrefecture
 • Regional conference of elected officersMonique Bastien (President)
 • Land282.21 km2 (108.96 sq mi)
 • Total415,347
 • Density1,471.8/km2 (3,812/sq mi)
 • Pop 2011-2016
Increase 4.1%
 • Dwellings
Time zoneUTC-5 (Eastern)
 • Summer (DST)UTC-4 (EDT)

The urban agglomeration of Longueuil was created on January 1, 2006 as a result of the de-amalgamation process brought upon by the Charest government. It encompasses all the boroughs that were merged into the previous city of Longueuil and still retains the same area as that mega-city.

The urban agglomeration of Longueuil is coextensive with the territory equivalent to a regional county municipality (TE) and census division (CD) of Longueuil, whose geographical code is 58.

In 2012, Longueuil mayor Caroline St-Hilaire proposed that the Urban agglomeration of Longueuil leave the Montérégie and become its own administrative region.[3]


Longueuil merged on January 1, 2002 with the communities of Boucherville, Brossard, Greenfield Park, LeMoyne, Saint-Bruno-de-Montarville, Saint-Hubert, and Saint-Lambert. These cities became boroughs of the Longueuil megacity. Saint-Lambert and LeMoyne combined to become one borough called Saint-Lambert/LeMoyne. The former city of Longueuil was renamed Le Vieux-Longueuil borough.

The former city hall of Brossard, became the city hall for the new city of Longueuil.

On June 20, 2004, the former boroughs of Boucherville, Brossard, Saint-Bruno-de-Montarville and Saint-Lambert voted to demerge from Longueuil to reconstitute themselves as municipalities on January 1, 2006. The rest of the city stayed intact.

The departure of Saint-Lambert from the city of Longueuil resulted in the immediate disbanding of the Saint-Lambert/LeMoyne borough. LeMoyne's small population and territory did not allow it to become a borough of its own. In 2005, the population of LeMoyne was given the choice to pick a new borough between Le Vieux-Longueuil, Saint-Hubert and Greenfield Park. Le Vieux-Longueuil ended up being the winner and amalgamated LeMoyne into its borough on January 1, 2006.

Following the demergers, Longueuil relocated its city hall from Brossard to Saint-Hubert, where it is still located.


According to the Act respecting the exercise of certain municipal powers in certain urban agglomerations, the cities and boroughs of the urban agglomeration of Longueuil are structured as follows:

Central municipality

Related municipalities

Population and representation by district

2016 Canadian Census / Longueuil

City Population (2016) Pct (%) # of Representatives # of council votes
Blason Ville Ca Boucherville Quebec.svg Boucherville 41,671 10.03% 1 1.76
Blason ville ca Brossard (Québec).svg Brossard 85,721 20.64% 1 3.21
Blason ville ca Longueuil (Québec).svg Longueuil 239,700 57.71% 6 10.63
Blason ville ca Saint-Bruno-de-Montarville.svg Saint-Bruno-de-Montarville 26,394 6.35% 1 1.13
Blason ville qc Saint-Lambert sans ornements.svg Saint-Lambert 21,861 5.26% 1 1
Total 415,347 100% 10 17.73

Agglomeration powers

Under this new system of municipal organization, the agglomeration city and the reconstituted cities (in this case, Boucherville, Brossard, Saint-Bruno-de-Montarville and Saint-Lambert) share powers and responsibilities. The urban agglomeration is headed by an agglomeration council which exercises these agglomeration powers.


Mother tongue from 2016 Canadian Census

Language Population Pct (%)
French only 295,710 71.96%
English only 29,350 7.14%
Both English and French 4,695 1.14%
Other languages 73,520 17.89%


Access Routes

Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:[6]

See also


  1. ^ Ministère des Affaires Municipales et Régions: Urban agglomeration of Longueuil[dead link]
  2. ^ a b c "Census Profile, 2016 Census - Longueuil, Territoire équivalent [Census division], Quebec and Longueuil, Ville [Census subdivision], Quebec". 2.statcan.gc.ca. Retrieved 2019-02-09.
  3. ^ Normandin, Pierre-André (2012-01-31). "Longueuil veut quitter... la Montérégie" (in French). La Presse. Retrieved 3 February 2012.
  4. ^ "2006 Community Profile: Longueuil (Territoire équivalent)". Canada 2006 Census. Statistics Canada. 2010-06-12. Retrieved 9 February 2012.
  5. ^ "2011 Statistics Canada Community Profile: Urban agglomeration of Longueuil, Quebec". 2.statcan.gc.ca. Retrieved 2013-08-01.
  6. ^ Gouvernement du Québec, Ministère des Transports. "Official Transport Quebec Road Map". Quebec511.gouv.qc.ca. Retrieved 2013-08-01.