Roussillon Regional County Municipality

Roussillon
Location in province of Quebec.
Coordinates: 45°22′N 73°34′W / 45.367°N 73.567°W / 45.367; -73.567
Country Canada
Province Quebec
RegionMontérégie
EffectiveJanuary 1, 1982
Named afterRégiment Royal Roussillon
County seatSaint-Constant
Government
  TypePrefecture
  PrefectNathalie Simon
Area
  Total
403.60 km2 (155.83 sq mi)
  Land423.82 km2 (163.64 sq mi)
 There is an apparent
contradiction between two
authoritative sources
Population
 (2016)
  Total
171,443
  Density404.5/km2 (1,048/sq mi)
  Change
2011–2016
5.7%
 Population excludes incompletely enumerated First Nations reserves
Time zoneUTC−5 (EST)
  Summer (DST)UTC−4 (EDT)
Area code(s)450 and 579
Websitewww.mrcroussillon.qc.ca

Roussillon (French pronunciation: [ʁusijɔ̃] ) is a regional county municipality in the Montérégie region of Quebec, Canada. The seat is in Saint-Constant, Quebec. The region's population was 171,443 as of the 2016 census.