Barrera, TexasBarrera is a census-designated place in Starr County, Texas, United States. It is a new CDP, formed from part of the Los Alvarez CDP prior to the 2010 census, with a population of 108.GeographyBarrera is located at .EducationMost of the CDP lies within the Roma Independent School District, while a portion is in the Rio Grande City Grulla Independent School District. The zoned elementary school for the Roma section is Delia Gonzalez Garcia Elementary School. Roma High School is the Roma district's sole comprehensive high school.DemographicsBarrera first appeared as a census designated place in the 2010 U.S. census after being carved out along with 3 other CDPs from the Los Alvarez CDP.