Rocky Mountain is a census-designated place (CDP) in Adair County, Oklahoma, United States.

[4] According to the United States Census Bureau, the CDP has a total area of 12.9 square miles (33.3 km2), of which 0.012 square miles (0.03 km2), or 0.08%, is water.

[4] As of the census[3] of 2000, there were 448 people, 156 households, and 117 families residing in the CDP.

There were 156 households, out of which 39.7% had children under the age of 18 living with them, 60.9% were married couples living together, 10.9% had a female householder with no husband present, and 25.0% were non-families.

21.2% of all households were made up of individuals, and 10.3% had someone living alone who was 65 years of age or older.