Monument is a home rule town situated at the base of the Rampart Range in El Paso County, Colorado, United States. Monument is one of the three communities that make up the Tri-Lakes area, along with Palmer Lake and Woodmoor. The town is part of the Colorado Springs metropolitan area, which had an estimated population of 700,000 in 2019. Monument is bordered by Pike National Forest on the west, Colorado Springs and the United States Air Force Academy to the south, Bald Mountain, True Mountain, and Spruce Mountain to the north, and Black Forest and rolling plains to the east. Monument was first settled as a stop along the Rio Grande Railroad in 1872, and the area was incorporated as a town called Henry's Station in 1879, but the name was later changed to Monument. The town population was 10,399 at the 2020 United States Census, an increase from the population of 5,530 in 2010 and 1,971 in 2000. On April 1, 2019, the town declared itself to be a Second Amendment sanctuary.

El Paso County is the most populous county located in the American state of Colorado. As of the 2020 Census, the population was 730,395, surpassing the City and County of Denver. The county seat is Colorado Springs, the second most populous city in Colorado. El Paso County is included in the Colorado Springs, Colorado, Metropolitan Statistical Area.