Security-Widefield is a census-designated place (CDP) comprising the unincorporated communities of Security and Widefield located in and governed by El Paso County, Colorado, United States. The CDP is a part of the Colorado Springs, CO Metropolitan Statistical Area. The population of the Security-Widefield CDP was 38,639 at the United States Census 2020. El Paso County governs the unincorporated communities. Both the Colorado Springs post office and the Fountain post office serve the area.

The City of Fountain is a home rule municipality located in El Paso County, Colorado, United States. The population was 29,802 at the 2020 census. Fountain is a part of the Colorado Springs, CO Metropolitan Statistical Area and the Front Range Urban Corridor.