- Saint Edward
- Saint Helena
- Saint Libory
- Saint Paul
- Sargent
- Saronville
- Schuyler
- Scotia
- Scotts Bluff
- Scottsbluff
- Scribner
- Seneca
- Seward
- Shelby
- Shelton
- Shickley
- Shubert
- Sidney
- Silver Creek
- Smithfield
- Snyder
- South Sioux City
- Spalding
- Sparks
- Spencer
- Sprague
- Springfield
- Springview
- St Libory
- St Paul
- St. Edward
- St. Paul
- Stamford
- Stanton
- Staplehurst
- Stapleton
- Steele City
- Steinauer
- Stella
- Sterling
- Stockville
- Strang
- Stratton
- Stromsburg
- Stuart
- Sumner
- Superior
- Sutherland
- Sutton
- Swanton
- Syracuse