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 and rises at Brome Lake located in neighbouring Brome-Missisquoi Regional County Municipality.
On January 1, 2010, the city of Bromont moved from La Haute-Yamaska to Brome-Missisquoi.
There are 8 subdivisions within the RCM:
Mother tongue language from Canada 2006 Census
|Both English and French
Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border: