La Haute-Yamaska Regional County Municipality

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La Haute-Yamaska
Location of La Haute-Yamaska
Coordinates: 45°24′N 72°44′W / 45.400°N 72.733°W / 45.400; -72.733Coordinates: 45°24′N 72°44′W / 45.400°N 72.733°W / 45.400; -72.733[1]
Country Canada
Province Quebec
EffectiveMarch 3, 1982
County seatGranby
 • TypePrefecture
 • PrefectPascal Russell
 • Total650.40 km2 (251.12 sq mi)
 • Land636.64 km2 (245.81 sq mi)
 • Total85,042
 • Density133.6/km2 (346/sq mi)
 • Pop 2006-2011
Increase 7.2%
 • Dwellings
Time zoneUTC−5 (EST)
 • Summer (DST)UTC−4 (EDT)
Area code(s)450 and 579

La Haute-Yamaska (meaning The Upper Yamaska) is a regional county municipality in the Montérégie region of Quebec, Canada. Its seat is Granby.

It is named for its position at the height of the Yamaska River, which cuts through its southern part. It rises at Brome Lake located in neighbouring Brome-Missisquoi Regional County Municipality.

On January 1, 2010, the city of Bromont left La Haute-Yamaska; it was reclassified as within the Brome-Missisquoi RCM.[4]


There are 8 subdivisions within the RCM:[2]


Mother tongue language from Canada 2006 Census

Language Population Pct (%)
French only 77,965 93.16%
English only 3,140 3.75%
Both English and French 350 0.42%
Other languages 2,235 2.67%


Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:[5]


  1. ^ Reference number 141094 of the Commission de toponymie du Québec (in French)
  2. ^ a b c Geographic code 470 in the official Répertoire des municipalités (in French)
  3. ^ a b "(Code 2447) Census Profile". 2011 census. Statistics Canada. 2012.
  4. ^ [1][permanent dead link]
  5. ^ Official Transport Quebec Road Map