Peña Blanca is a census-designated place (CDP) in Sandoval County, New Mexico.

Peña Blanca's name is derived from the Spanish term for "white rock".

[3] According to the United States Census Bureau, the CDP has a total area of 6.8 square miles (18 km2), all land.

As of the census[5] of 2000, there were 661 people, 226 households, and 169 families residing in the CDP.

16.8% of all households were made up of individuals, and 7.5% had someone living alone who was 65 years of age or older.