Sandoval, TexasSandoval is a census-designated place in Starr County, Texas, United States. It is a new CDP formed from part of the Fronton CDP prior to the 2010 census, with a population of 32.GeographySandoval is located at .DemographicsSandoval first appeared as a census designated place in the 2010 U.S. census, one of three CDPs carved out of the Fronton CDP.EducationThe CDP is within the Roma Independent School District. The zoned elementary school for the 2010 Census community is Emma Vera Elementary School. Roma High School is the district's sole comprehensive high school.