Fort Carson is a United States Army installation located near Colorado Springs, primarily in El Paso County, Colorado. It is 40 miles (64 km) north of Pueblo, Colorado in Pueblo County. The 137,000-acre (550 km2) installation extends south into Pueblo and Fremont counties. The portion of the installation located within El Paso County forms a census-designated place (CDP), which had a population of 13,815 at the 2010 census.