- Second Island
- Security
- Segura
- Sellers
- Selma
- Seneca Mobile Home Park
- Sentell
- Serena
- Seven Oaks Mobile Home Park
- Seymourville
- Shadow Pine Estates
- Shady
- Shady Acres Mobile Home Park
- Shady Grove
- Shady Grove
- Shady Oaks
- Shady Oaks Mobile Home Park
- Shady Park
- Shady Pines Mobile Home Park
- Shadyside
- Shamard Heights
- Shamrock
- Shamrock Gardens
- Shark Island
- Sharkey
- Sharon
- Sharp
- Sharp
- Sharp Islands
- Sharp Town