- Sound Vista Mobile Home Park
- South Seattle
- Southern Heights
- Southgate Mobile Home Park
- Spaids Unique Manor and Estates Mobile Home Park
- Spring Beach
- Spring Beach
- Stampede
- Star Lake
- Stillwater
- Stuart
- Stuck
- Suburban Villa Mobile Home Park
- Summerhurst
- Summit
- Sunnydale Mobile Home Park
- Sunset Village
- Seabird Mobile Home Park
- Seabold
- Sheridan
- Sheridan Park
- Sherman Heights
- Silver Creek Meadows Mobile Home Park
- Silverdale Mobile Estates
- Snug Harbor Mobile Home Park
- South Beach
- South Colby
- Southworth
- Steele Creek Mobile Home Park
- Striebels Corner