Les Collines-de-l'Outaouais Regional County Municipality

Les Collines-de-l'Outaouais
Coordinates: 45°33′N 75°52′W / 45.550°N 75.867°W / 45.550; -75.867
Country Canada
Province Quebec
RegionOutaouais
EffectiveDecember 4, 1991
County seatChelsea
Government
  TypePrefecture
  PrefectMarc Carriere
Area
  Total
2,199.30 km2 (849.15 sq mi)
  Land1,912.05 km2 (738.25 sq mi)
Population
 (2021)
  Total
53,657
  Density28.1/km2 (73/sq mi)
  Change
2016-2021
11%
  Dwellings
24,627
Time zoneUTC−5 (EST)
  Summer (DST)UTC−4 (EDT)
Area code819
Websitewww.mrcdescollinesdeloutaouais.qc.ca

Les Collines-de-l'Outaouais (French pronunciation: [le kɔlin lutawɛ], "The hills of the Outaouais") is a regional county municipality in the Outaouais region of western Quebec, Canada. The region nearly encircles the City of Gatineau, which is to the south. Its administrative seat is in Chelsea, Quebec.

It was created in January 1991 when the Communauté régionale de l'Outaouais (Outaouais Regional Community) was split into Les Collines-de-l'Outaouais RCM and the Communauté urbaine de l'Outaouais (Outaouais Urban Community, now City of Gatineau). The region is home to the majority of Gatineau Park. It is bisected by the Gatineau River which flows from north to south. The Ottawa River forms the southwestern boundary.