Population Forecast
5 year Forecast - 3%
The current population of the Great Falls, MT Market is 843,745 as of the January 2026 PopStats estimate. PopStat’s Trend models indicate a 5 year population change of 3%, resulting in a Population of 869,211 by January 2031. This percentage change in Population ranks 71st across STI Markets. The Great Falls, MT Market currently ranks 108th in overall population, and will rank 109th by January 2031.
High and Low Range - 0.1% to 12.5%
While the summation of mid range 5 year forecasts foresee a change in Population of 3% for Great Falls, MT Market. The forecast high ranges of these forecasts leaves open the possibility for a Population change as high as 12.5% at 949,128. Similarly a population change as low as 0.1% at 844,474 is not without possibility.
Figure 73: Population Trend and Forecast
10 year Projections - 5.8%
By January 2036 we project the Population of the Great Falls, MT Market to be 893,064 resulting in a change of 5.8% compared to the current Population. This projected percentage change in Population ranks 78th across STI Markets. The Great Falls, MT Market currently ranks 108th in overall population, and will rank 109th by January 2036.
