- Sulphur Springs
- Sunny Side
- South Towanda
- Saco
- Sciotavale
- Sheshequin
- Silvara
- Snedekerville
- Sopertown
- South Branch
- South Hill
- South Warren
- Spring Hill
- Springfield
- Standing Stone
- Stevenson
- Stone House Corner
- Sylmar
- Sally Ann
- Sandy Run East
- Schlemville
- Schofer
- Schubert
- Schultzville
- Schwarzwald Heights
- Seisholtzville
- Seyfert
- Shadow Ridge
- Shamrock Station
- Spangsville