Startex is a census-designated place (CDP) in Spartanburg County, South Carolina, United States.

[7] According to the United States Census Bureau, the CDP has a total area of 1.9 square miles (4.9 km2), all land.

There were 443 housing units at an average density of 231.4 per square mile (89.3/km2).

The racial makeup of the CDP was 87.55% White, 11.54% African American, 0.40% Asian, 0.51% from other races.

28.4% of all households were made up of individuals, and 11.5% had someone living alone who was 65 years of age or older.