- Saddle Ridge
- Saguache
- Saint Anton Highlands
- Saint Charles
- Saint Elmo
- Saint Malo
- Saint Marys
- Saint Petersburg
- Saint Vrains
- Salida
- Salina
- Salt Creek
- Sample
- San Acacio
- San Antonio
- San Isabel
- San Luis
- San Miguel
- San Miguel
- San Pablo
- San Pedro
- Sanford
- Santa Maria
- Sapinero
- Sarcillo
- Sargents
- Satank
- Saunders
- Sawpit
- Saxton