Los Arrieros, TexasLos Arrieros is an unincorporated community and census-designated place in Starr County, Texas, United States. Its population was 91 as of the 2010 census. U.S. Route 83 passes through the community.GeographyAccording to the U.S. Census Bureau, the community has an area of, all land.DemographicsLos Arrieros first appeared as a census designated place in the 2010 U.S. census.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.