Los Arcos is a census-designated place (CDP) in Webb County, Texas, United States. This was a new CDP for the 2010 census. As of the 2020 census, Los Arcos had a population of 83.
Los Arcos is located at (27.614419, -99.210488). The CDP has a total area of , all land.
Los Arcos first appeared as a census designated place in the 2010 U.S. census.
Residents are in the United Independent School District. Zoned schools include: Dr. Henry Cuellar Elementary School, Antonio Gonzalez Middle School, United South High School.
The designated community college for Webb County is Laredo Community College.