* In Canada: Blackfoot is spoken in the province of Alberta, specifically in the regions of southern Alberta and the Blood Tribe, Siksika Nation, and Piikani Nation.
* In the United States: Blackfoot is spoken in the state of Montana, mainly in the areas of the Fort Belknap Indian Community, the Blackfeet Nation, and the Rocky Boy's Indian Reservation.
While Blackfoot is primarily spoken in these areas, there are also smaller communities of Blackfoot speakers in other parts of North America.