St. Pierre is a city located in Montana. St. Pierre has a 2020 population of 327. St. Pierre is currently declining at a rate of 0.00% annually and its population has decreased by -6.57% since the most recent census, which recorded a population of 350 in 2010. St. Pierre reached it's highest population of 541 in 2017.
The average household income in St. Pierre is $42,488 with a poverty rate of 45.26%. The median rental costs in recent years comes to - per month, and the median house value is $67,700. The median age in St. Pierre is 24.2 years, 28.4 years for males, and 24 years for females. For every 100 females there are 99.4 males.