Gardner is a census-designated place (CDP) and post office in and governed by Huerfano County, Colorado, United States.

The Gardner post office has the ZIP Code 81040.

[4] At the United States Census 2020, the population of the Gardner CDP was 106.

[5] The community has the name of Herbert Gardner, a local pioneer.

The Gardner CDP has an area of 1,582 acres (6.403 km2), all land.