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.
Baiyu County, which belongs to Ganzi Tibetan Autonomous Prefecture of Sichuan Province, is located in the transitional zone from Qinghai-Tibet Plateau to Yunnan-Guizhou Plateau. It belongs to the northern section of the Hengduan Mountains and the east bank of the upper reaches of the Jinsha River. It is located between 98 degrees 36 minutes east longitude to 99 degrees 56 minutes and 30 degrees 22 minutes to 31 degrees 40 minutes north latitude. It is bordered by Xinlong County to the east, Batang and Litang counties to the south, Gongjue and Jiangda counties in Tibet to the west, and Ganzi County and Dege County to the north. By the end of 2011, Baiyu County had an area of 10591 square kilometers and had jurisdiction over 1 town and 16 townships with a total population of 53600, a birth rate of 8.64 ‰ and a natural population growth rate of 6.67 ‰. In 2011, Baiyu County achieved a GDP of 869 million yuan, an increase of 9.7% over 2010.