| Montcalm | |
| Settlement Type: | Regional county municipality |
| Coordinates: | 45.9°N -113°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Lanaudière |
| Established Title: | Effective |
| Established Date: | January 1, 1982 |
| Seat Type: | County seat |
| Seat: | Sainte-Julienne |
| Government Type: | Prefecture |
| Leader Title: | Prefect |
| Leader Name: | Patrick Massé |
| Area Total Km2: | 716.30 |
| Area Land Km2: | 709.58 |
| Population Footnotes: | [1] |
| Population Total: | 58,680 |
| Population As Of: | 2021 |
| Population Density Km2: | 82.7 |
| Population Blank1 Title: | Change 2016–2021 |
| Population Blank1: | 11.6% |
| Population Blank2 Title: | Dwellings |
| Population Blank2: | 25,557 |
| Timezone: | EST |
| Utc Offset: | −5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −4 |
| Postal Code Type: | Postal code(s) |
| Area Code: | 450 and 579 |
Montcalm is a regional county municipality in the Lanaudière region of Quebec, Canada. Its seat is Sainte-Julienne.
The population according to the 2021 Canadian Census was 58,680[1]
There are 10 subdivisions within the RCM:
Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:[2]