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.
Sinan County is under the jurisdiction of Tongren City, Guizhou Province, located in the northeast of Guizhou Province, the middle and lower reaches of the Wujiang River, under the jurisdiction of Tongren area, with geographical coordinates of 107 °52 "108 °28 °east longitude and 27 °32" 28 °10 'north latitude. The county is 57.6 km long from east to west and 69.3 km wide from north to south. It is bordered by Yinjiang County in the east, Shiqian County in the south, Fenggang County in the west and Dejiang County in the north. The four main county-level highway networks in Sinan County are Sinan-Shiqian, Sinan-Dabachang, Sinan-Fenggang, Shagou-Hepengxi and so on. Sinan County has an administrative area of 2230.5 square kilometers and has jurisdiction over 28 townships (towns and streets), including 17 formed towns, 3 streets, 8 ethnic minority townships, 489 administrative villages and 37 communities, with a total population of 684500. In 2017, Sinan County finished.