Brookside is a Statutory Town located in Fremont County, Colorado, United States.

[1] Brookside postal addresses are now served by the Cañon City, Colorado post office (ZIP code 81212).

[3] At the 2020 United States Census, the town had a total area of 303 acres (1.227 km2), all of it land.

[4] Brookside is a part of the Cañon City, CO Micropolitan Statistical Area.

About 13.8% of families and 13.7% of the population were below the poverty line, including 29.6% of those under the age of eighteen and none of those 65 or over.