Known as the “Mile High City,” Denver is the capital and most populous city in Colorado. With a 2015 estimated population of 682,545, Denver ranks as the 19th-most populous U.S. city and fastest-growing major city in the United States. Because of its central U.S. location, Denver has become a location for storage and distribution of goods and services to the Mountain States, Southwest states, as well as all western states. In 2015, Denver ranked No. 1 on Forbes' list of the Best Places for Business and Careers.