- Sage Hen
- Scotts
- Scotty Place
- Sheepshead
- Shumway
- Spalding Tract
- Stacy
- Stones Landing
- Isla San Clemente
- San Pedro Hill
- Sandberg
- Santa Anita
- Isla Santa Catalina
- Santa Maria
- Sawtelle
- Seal Rocks
- Seminole Hot Springs
- Seminole Springs Trailer Park
- Sentinel Rock
- Singing Springs
- Sleepy Valley
- Smith Island
- Southeast Rock Auxiliary
- Stallion Meadow Mobile Home Park
- Stevenson Ranch
- Stoneman
- Studebaker
- Sulphur Springs
- Sun Village
- Sunrise