- Schoonover
- Servia
- Shano
- Silcott
- Silcott Island
- Steamboat Island
- Sand Island
- Songbird Island
- South Highlands
- Susie
- Saddleview Mobile Home Park
- Selfs Trailer Park
- Shrine Beach
- South Wenatchee
- Stayman
- Sunnybank
- Sams Trailer Park
- Sandy Island
- Sea Lion Rock
- Shadow
- Shuwah
- Snug Harbor
- Spruce West Mobile Home Park
- Sunnyside Mobile Court
- Saddle Dam Campground
- Saint Helens
- Sandy Bend
- Sightly
- Speelyai
- Stella