El Paso County is a county located in the U.S. state of Colorado. As of the 2010 census, the population was 622,263, making it the second-most populous county in Colorado behind Denver County. The county seat is Colorado Springs, the second most populous city in Colorado. El Paso County is included in the Colorado Springs, CO Metropolitan Statistical Area. The county is home to 15 incorporated municipalities, including Colorado Springs, Fountain, and Monument; the unincorporated area is split into several census-designated places, including Black Forest, Cascade-Chipita Park, Cimarron Hills, Ellicott, Falcon, Fort Carson, Gleneagle, Peyton, Ramah, Rock Creek Park, Security-Widefield, Stratmoor, and Woodmoor.