Colorado Springs is a home rule city that is the county seat of and the most populous city in El Paso County, Colorado, United States. The city had a population of 478,961 at the 2020 census, a 15.02% increase since 2010. Colorado Springs is the second-most populous city and most extensive city by area 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, which had 755,105 residents in 2020, 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.