Montcalm is a census-designated place (CDP) in Mercer County, West Virginia, United States. The population was 726 at the 2010 census. It is part of the Bluefield, WV-VA micropolitan area which has a population of 107,342.
Montcalm is located at 37°21′16″N 81°15′3″W / 37.35444°N 81.25083°W / 37.35444; -81.25083 (37.354558, -81.250898), along the Bluestone River.
According to the United States Census Bureau, the CDP has a total area of 2.7 square miles (7.1 km²), all of it land.