Colorado Springs is a home rule municipality in, and the county seat of, El Paso County, Colorado, United States. It is the largest city in El Paso County, with a population of 478,961 at the 2020 United States Census, a 15.02% increase since 2010. Colorado Springs is the second-most populous city and the most extensive city in the state of Colorado, and the 40th-most populous city in the United States. It is the principal city of the Colorado Springs metropolitan area and the second-most prominent city of the Front Range Urban Corridor. It is located in east-central Colorado, on Fountain Creek, 70 miles (113 km) south of Denver.
Dege County, which belongs to Ganzi Tibetan Autonomous Prefecture of Sichuan Province, is located in the northwest of Ganzi Tibetan Autonomous Prefecture, between longitude 98 °12 "98 °41" east and latitude 31 °24 "32 °43 'north, adjacent to Ganzi County in the east, Baiyu County in the south, Jiangda County in Tibet across the Jinsha River in the west, and Shiqu County in the north, located in the upper reaches of Jinsha and Yalong River. The total area of the county is 11025.24 square kilometers. The 317 line of Sichuan-Tibet Highway runs through the county seat and some districts and townships. Qiershan pass is 5050 kilometers above sea level, which is known as "the highest in Sichuan and Tibet and the first risk in Sichuan and Tibet". The county seat is 588 kilometers away from the state capital Kangding and 954 kilometers away from the provincial capital Chengdu. As of 2011, the registered population of the county was 83495. The government is stationed in Gengqing town. At the end of 2010, domestic students in Dege County