| La Haute-Yamaska | |
| Settlement Type: | Regional county municipality |
| Coordinates: | 45.4°N -116°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Estrie |
| Established Title: | Effective |
| Established Date: | March 3, 1982 |
| Seat Type: | County seat |
| Seat: | Granby |
| Government Type: | Prefecture |
| Leader Title: | Prefect |
| Leader Name: | Pascal Russell |
| Area Footnotes: | [1] |
| Area Total Km2: | 650.40 |
| Area Land Km2: | 636.00 |
| Population Total: | 92,796 |
| Population As Of: | 2021 |
| Population Density Km2: | 145.9 |
| Population Blank1 Title: | Change 2016-2021 |
| Population Blank1: | 5.1% |
| Population Blank2 Title: | Dwellings |
| Population Blank2: | 41,563 |
| Timezone: | EST |
| Utc Offset: | −5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −4 |
| Postal Code Type: | Postal code(s) |
| Area Code: | 450 and 579 |
| Footnotes: | [2] |
La Haute-Yamaska (meaning The Upper Yamaska) is a regional county municipality in the Estrie 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 to the Brome-Missisquoi RCM.[3]
In 2021, it was transferred to the Estrie region from Montérégie.[4]
There are 8 subdivisions within the RCM:
Mother tongue from Canada 2021 Census[1]
| 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 and numbered routes that run through the municipality, including external routes that start or finish at the county border:[5]