La Haute-Yamaska Regional County Municipality

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

La Haute-Yamaska
Regional county municipality
Coordinates: 45°24′N 72°44′W[1]
Country	Canada
Province	Quebec
Region	Estrie
Effective	March 3, 1982
County seat	Granby
Government [2]
• Type	Prefecture
• Prefect	Pascal Russell
Area [3]
• Total	650.40 km2 (251.12 sq mi)
• Land	636.00 km2 (245.56 sq mi)
Population  (2021)[3]
• Total	92,796
• Density	145.9/km2 (378/sq mi)
• Change 2016-2021	5.1%
• Dwellings	41,563
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Area code(s)	450 and 579
Website	www.haute-yamaska.ca
[4]

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 to the Brome-Missisquoi RCM.^[5]

In 2021, it was transferred to the Estrie region from Montérégie.^[6]

Subdivisions

There are 8 subdivisions within the RCM:^[2]

Cities & Towns (2) Granby Waterloo

Municipalities (4) Roxton Pond Saint-Alphonse-de-Granby Saint-Joachim-de-Shefford Sainte-Cécile-de-Milton

Townships (1) Shefford

Villages (1) Warden

Demographics

Mother tongue from Canada 2021 Census^[3]

Language	Population	Pct (%)
French only	83,715	91.6%
English only	2,835	3.1%
Both English and French	1,075	1.2%
Other languages	3,330	3.6%

Highways

Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:^[7]

Autoroutes A-10

Principal Highways R-112 R-137 R-139

Secondary Highways R-211 R-241 R-243

External Routes None

References

1. "Banque de noms de lieux du Québec: Reference number 141094". toponymie.gouv.qc.ca (in French). Commission de toponymie du Québec.
2. "Répertoire des municipalités: Geographic code 470". www.mamh.gouv.qc.ca (in French). Ministère des Affaires municipales et de l'Habitation.
3. "Census Profile, 2021 Census: La Haute-Yamaska, Municipalité régionale de comté [Census division], Quebec". Statistics Canada. Retrieved September 8, 2021.
4. "Census Profile, 2021 Census, Statistics Canada - Validation Error".
5. "Modifications aux municipalités du Québec" (PDF) (in French). Institut de la statistique du Québec. p. 4. Retrieved November 25, 2019.
6. "La Haute-Yamaska et Brome-Missisquoi entrent dans le giron de l'Estrie". La Tribune. 8 July 2021. Retrieved October 15, 2021.
7. Official Transport Quebec Road Map