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.
Longtan District is one of the areas under the jurisdiction of Jilin City, Jilin Province, which gets its name because it is located in the foothills of Longtan. Located in the northeast of Jilin City, the north bank of Songhua River, Longtan District borders Jiaohe City in the east, Fengman District in the southeast, Changyi District in the south and west, and Shulan City in the north. Longtan District covers an area of 1208.9 square kilometers and cultivated land covers an area of 292.27 square kilometers. In 2010, the resident population was 527532, including more than 20 ethnic groups such as Han and Yao. In 2016, Longtan has jurisdiction over 13 streets, 5 towns and 1 township. In 2016, the GDP of Longtan District reached 39.75 billion yuan, an increase of 7 percent over 2015.