- Schramm
- Scout Island
- Security
- Security-Widefield
- Sedalia
- Sedgwick
- Sequndo
- Seibert
- Selma
- Sentinel Island
- Seven Hills
- Seven Hills
- Sevenmile Plaza
- Severance
- Shaffers Crossing
- Shamballah-Ashrama
- Shamrock
- Shaw
- Shawnee
- Sheephorn
- Shelter Island
- Shelton
- Sheridan
- Sheridan Lake
- Sherrelwood
- Sherrelwood Estates
- Sikes
- Sillsville
- Siloam
- Silt