El Socio is a census-designated place (CDP) in Starr County, Texas, United States. It is a newly-established CDP, formed from part of the former La Victoria CDP prior to the 2010 census. As of the 2020 census, El Socio had a population of 104.
El Socio is located at (26.340454, -98.637097).
El Socio along with 5 other census designated places (Alto Bonito Heights, El Castillo, Eugenio Saenz, Olmito and Olmito, and Valle Vista) was formed prior to the 2010 U.S. census from parts of La Victoria CDP.
The CDP is within the Rio Grande City Grulla Independent School District (formerly Rio Grande City Consolidated Independent School District)