Portland is a census-designated place (CDP) located in and governed by Ouray County, Colorado, United States.

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

The population of the Portland CDP was 136 at the United States Census 2020.

[3] The Ridgway post office (Zip Code 81432) serves the area.

The Portland CDP has an area of 2,049 acres (8.293 km2), all land.