Rafael Pena is a census-designated place (CDP) in Starr County, Texas, United States.

This was a new CDP for the 2010 census, with a population of 17.

[1] Rafael Pena is located at 26°18′3″N 98°38′27″W / 26.30083°N 98.64083°W / 26.30083; -98.64083 (26.300945, -98.640870).

[2] With a total area of 0.005 square miles, it is the smallest CDP in the United States.

Rafael Pena first appeared as a census designated place in the 2010 U.S.