It was named for Louis-Joseph de Montcalm (1712-1759), commander of French forces on the Plains of Abraham at Quebec.

[2] The Rural Municipality of Montcalm is located in the Pembina Valley Region of Manitoba, with an area of 469.41 km2 (181.24 sq mi).

The Roseau River Anishinabe First Nation is situated between Montcalm and the neighbouring Municipality of Emerson – Franklin.

[1] Agriculture is one of the leading industries in the Montcalm area, with grain production (such as wheat, barley, flax, oats, corn, canola and sunflowers), hog and cattle farms, and seeds all being main types of farming.

St. Jean Baptiste is home to major grain processing and hauling companies NuVision Commodities and Roy Legumex.