The unemployment rate in Big Sky is 2.70 percent(U.S. avg. is 5.20%). Recent job growth is Positive. Big Sky jobs have Increased by 4.91 percent. Compared to the rest of the country, Big Sky's cost of living is 29.90% Higher than the U.S. average. As of 2014, Big Sky's population is 2,694 people. Since 2000, it has had a population growth of 292.71 percent.