Minneapolis proper (the size of the city only) today has a population of around 425,000. At current growth rates, Bozeman/Gallatin County/Big Sky could reach that number in the decade past the midway point of this century. Salt Lake City proper (the city only) has a present population of 200,000. If you were to draw a line from Idaho Falls to Rexburg to Jackson Hole and south to Afton, Wyoming, there is already a Salt Lake City-proper-sized population. The question is how much larger will that corridor grow with more people moving in? Some believe it could easily double by the middle of this century. That would equal the total number of residents in all of the Greater Yellowstone Ecosystem in 2017.