- Saddle Ridge
- Saint Anton Highlands
- Saint Charles
- Saint Elmo
- Saint Malo
- Saint Petersburg
- Saint Vrains
- Salina
- Sample
- San Acacio
- San Antonio
- San Isabel
- San Miguel
- San Miguel
- San Pablo
- San Pedro
- Santa Maria
- Sapinero
- Sarcillo
- Sargents
- Satank
- Saunders
- Saxton
- Schramm
- Scout Island
- Security
- Security-Widefield
- Sequndo
- Selma
- Sentinel Island