Box Canyon is a census-designated place (CDP) in Val Verde County, Texas, United States. As of the 2020 census, Box Canyon had a population of 29. This CDP was formed prior to the 2010 census from parts of the deleted Box Canyon-Amistad CDP.
According to the United States Census Bureau, the CDP has a total area of , all land.
Box Canyon first appeared as a census designated place in the 2010 U.S. census, one of two CDPs carved out of the deleted Box Canyon-Amistad CDP
The area is served by the Comstock Independent School District.
The whole county is served by Southwest Texas Junior College, according to the Texas Education Code.