- Silent Wheels Ranchomes
- Silver Bell
- Silver Bell Trailer Park
- Silver Cholla Mobile Park
- Silver Creek
- Silver Saddle Mobile Home Park
- Silver Spur Ranch
- Silver Spur Village
- Silverado Estates Mobile Home Park
- Silverbell
- Silvergate II
- Silvergate Trails
- Silverlake Estates Mobile Home Park
- Simmons
- Sincuidados
- Singing Spur Mobile Park
- Siovi Shuatak
- Sipaulovi
- Sivili Chuchg
- Six Mile Crossing
- Six Shooter Canyon
- Sixmile Village
- Skoksonak
- Skull Valley
- Sky Ridge Mobile Homes
- Skyline Bel Aire Estates
- Skyline Heights
- Sleepy Hollow
- Sleepy Hollow Mobile Home Estates
- Sleepy Hollow Trailer Village