Colorado (USA) is 6.5 times larger than Switzerland.
Area: 41,277 km2 World Factbook
Population: 8,061,516 (July 2014) World Factbook
Switzerland, officially the Swiss Confederation, is a federal parliamentary republic consisting of 26 cantons, with Bern as the seat of the federal authorities, the so-called Bundesstadt. Wikipedia
Colorado is a U.S. state encompassing most of the Southern Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains. Colorado is part of the Western United States, the Southwestern United States, and the Mountain States. Wikipedia