View source for Fort Belknap Indian Reservation (Montana)

=== Population Growth History  ===

Between 1900, when the Reservation population was around 1,290, to around the time of the vote on the IRA, the population of Fort Belknap Reservation increased by only 75. 

Since 1935, the population of Fort Belknap Reservation has increased from around 1,350 in 1935, to 2,738 in 2010. It has taken around 6 decades for the population to double. However, the predominantly Indian communities adjacent to Fort Belknap Reservation, bring the total Reservation population to over 3,300. It has actually nearly tripled in population since 1935.