Chile is 3.9 times larger than South Dakota (USA).
Area: 756,102 km2 World Factbook
Population: 17,363,894 (July 2014) World Factbook
Chile, officially the Republic of Chile, is a South American country occupying a long, narrow strip of land between the Andes mountains to the east and the Pacific Ocean to the west. Wikipedia
South Dakota is a state located in the Midwestern region of the United States. It is named after the Lakota and Dakota Sioux Native American tribes. South Dakota is the 17th most extensive, but the 5th least populous and the 5th least densely populated of the 50 United States. Wikipedia