- Sinclair City
- Starrville
- Swan
- Smyer
- Snook
- Snyder
- Socorro Mission Number 1 Colonia
- Seven Knobs
- Sour Lake
- South Alamo
- South Fork Estates
- South Houston
- South Mountain
- South Padre Island
- South Toledo Bend
- Southlake
- Southmayd
- South Side Place
- Spade
- Spearman
- Splendora
- Spofford
- Spring
- Springlake
- Springtown
- Spur
- Stagecoach
- Star Harbor
- Salinas Colonia
- Salineno North