Derby is an unincorporated community and a census-designated place (CDP) located in and governed by Adams County, Colorado, United States.

The population of the Derby CDP was 8,407 at the United States Census 2020.

[3] The Commerce City post office (Zip code 80022) serves the area.

[4] The Derby post office was established in 1910 and remained in operation until 1963.

Derby is in Adams County School District 14.