Cimarron Hills is an unincorporated community and a census-designated place (CDP) located in and governed by El Paso County, Colorado, United States.

The population of the Cimarron Hills CDP was 19,311 at the United States Census 2020.

Rail: (Historical information) In 1888, the Chicago, Rock Island and Pacific Railroad began construction of a main line between Limon and Colorado Springs, passing through Cimarron Hills.

In later years, the Cadillac and Lake City Railroad provided service between Cimarron Hills and Limon.

Although the tracks were removed in the 1980s, the railroad grade can still be seen as a prominent U-shape in aerial images of Cimarron Hills.