Great Falls is a city in and the county seat of Cascade County,
Montana, United States. The 2011 census estimate put the population at 58,950.
The population was 58,505 at the 2010 census. It is the principal city of the
Great Falls, Montana Metropolitan Statistical Area, which encompasses all of
Cascade County and has a population of 81,723. Great Falls takes its name from
the series of five waterfalls in close proximity along the upper Missouri River
basin that the Lewis and Clark Expedition had to portage around over a ten mile
stretch; the effort required 31 days of arduous labour during the westward leg