The amount of people moving to Montana in recent years has started to slow down, which is probably a relief for locals after years of population growth and rising property prices. Despite all of the growth in recent years, Montana is still extremely rural in a lot of places, which means there aren't a whole lot of good-paying jobs, or at least not enough to go around for everybody.
Still, the state is home to some of the best natural places in the U.S., and it probably won't see a net decline in population for a couple of more years, if at all.