- Seola Beach
- Sequim
- Serene
- Serene Terrace Mobile Home Park
- Servia
- Seven Bays
- Seven Lakes Mobile Home Park
- Shadow
- Shadow Pines Mobile Estates
- Shady Glen Mobile Home Park
- Shady Haven Mobile Home Park
- Shady Hill Mobile Home Park
- Shady Lawn Mobile Home Park
- Shady Woods East and West Mobile Home Park
- Shafrans Mobile Estate
- Shag Rock
- Shaker Church
- Shano
- Sharpes Corner
- Shaw Island
- Shawnee
- Shawnee
- Sheffler
- Shelter Bay
- Shelton
- Sheridan
- Sheridan Beach
- Sheridan Park
- Sherman
- Sherman Heights