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

The CDP is a part of the Fort Morgan, CO Micropolitan Statistical Area.

The population of the Trail Side CDP was 157 at the United States Census 2020.

[4] The Fort Morgan post office (Zip Code 80701) serves the area.

[3] The Trail Side CDP has an area of 459 acres (1.856 km2), all land.