Les Appalaches Regional County Municipality

Les Appalaches
Coordinates: 46°05′N 71°18′W / 46.083°N 71.300°W / 46.083; -71.300
Country Canada
Province Quebec
RegionChaudière-Appalaches
EffectiveJanuary 1, 1982
County seatThetford Mines
Settlements
Government
 • TypePrefecture
 • PrefectGhislain Hamel
Area
 • Total
1,987.10 km2 (767.22 sq mi)
 • Land1,912.49 km2 (738.42 sq mi)
Population
 (2016)
 • Total
42,346
 • Density22.1/km2 (57/sq mi)
 • Change
2011-2016
1.8%
 • Dwellings
22,714
Time zoneUTC−5 (EST)
 • Summer (DST)UTC−4 (EDT)
Area codes418 and 581
Websitewww.mrc
desappalaches.ca

Les Appalaches (French pronunciation: [lez‿apalaʃ]) is a regional county municipality (RCM) in the Chaudière-Appalaches region in southeastern Quebec, Canada. It was established in 1982 from parts of the historic counties of Beauce, Frontenac, Mégantic, and Wolfe. The county seat and largest city is Thetford Mines.

The name of the RCM is linked to its location in the Appalachian Mountains with Mounts Adstock, Caribou, Oak, and Saint-Adrien being the highest. Until 2008, it was known as L'Amiante Regional County Municipality, because of the importance of asbestos mining in the region (amiante is French for "asbestos").