- Saint Anthony
- Saint Benedict
- Saint Gertrude
- Saint Joe
- Saint John
- Saint Michael
- Saint Thomas
- San Haven
- Sanborn
- Sanger
- Sanish
- Sarles
- Sawyer
- Schafer
- Schefield
- Schmidt
- Scoria Point
- Scranton
- Selfridge
- Selz
- Sentinel Butte
- Sevenmile Corner
- Sharlow
- Sharon
- Shawnee
- Sheldon
- Shell Valley
- Shepard
- Sherbrooke
- Sherwood