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 population of the Security-Widefield CDP was 38,639 at the United States Census 2020. The CDP is a part of the Colorado Springs, CO Metropolitan Statistical Area and the Front Range Urban Corridor. Both the Colorado Springs post office (Zip Codes 80911, 80913, and 80925) and the Fountain post office (Zip Code 80817) serve the area.
The S.A. Wilson Elementary School in Security-Widefield is a school built in 1959-61. It is listed on the National Register of Historic Places in 2017.
In March 1991, Widefield was the site of the crash of United Airlines Flight 585, which killed all 25 persons aboard. The crash was later determined to have been caused by a defect in the design of the Boeing 737-200's rudder power control unit.
East-west running Fontaine Boulevard divides Security and Widefield into two parts. Local convention usually regards Security as the section that is northwest of Fontaine Boulevard, with Widefield considered to be along the northern and southeastern sections of Fontaine adjacent to the City of Fountain. Security and Widefield neighborhoods are connected historically to their respective water towers. Much of the northern section of Fontaine is served by the Security Water and Sanitation District, whereas a small northern section as well as the southern section are served by the Widefield Water and Sanitation District including areas east of Grinnell.
At the 2020 United States Census, the Security-Widefield CDP had an area of , including of water.
The United States Census Bureau initially defined the for the The CDP was expanded to the for the
As of the 2020 census, Security-Widefield had a population of 38,639. The median age was 34.4 years. 26.2% of residents were under the age of 18 and 12.6% of residents were 65 years of age or older. For every 100 females there were 100.6 males, and for every 100 females age 18 and over there were 97.7 males age 18 and over.
97.7% of residents lived in urban areas, while 2.3% lived in rural areas.
There were 13,030 households in Security-Widefield, of which 38.1% had children under the age of 18 living in them. Of all households, 57.9% were married-couple households, 15.0% were households with a male householder and no spouse or partner present, and 21.1% were households with a female householder and no spouse or partner present. About 17.3% of all households were made up of individuals and 7.1% had someone living alone who was 65 years of age or older.
There were 13,412 housing units, of which 2.8% were vacant. The homeowner vacancy rate was 1.3% and the rental vacancy rate was 5.1%.
Students are served by the Widefield School District 3.