Sebastian is a census-designated place (CDP) in Willacy County, Texas, United States. The population was 1,864 at the 2000 census.
Location of Sebastian, Texas
|Coordinates: 26°20′36″N 97°47′36″W|
Sebastian is located at (26.343249, -97.793347).
According to the United States Census Bureau, the CDP has a total area of 1.7 square miles (4.3 km²), all of it land.
Sebastian is served by the Lyford Consolidated Independent School District.
In addition, South Texas Independent School District operates magnet schools that serve the community.