- Rothville
- Rueter
- Rush Hill
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- Russellville
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- Saint Charles
- Saint Clair
- Saint Elizabeth
- Saint James
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- Saint Patrick
- Saint Peters
- Saint Robert
- Saint Thomas
- Sainte Genevieve
- Salem
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- Santa Fe
- Sarcoxie
- Savannah
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- Schell City
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- Sedalia
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- Seligman
- Senath
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- Seymour
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- Sheldon
- Shell Knob
- Sheridan
- Shook
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- Sikeston
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- Silva
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- Smithton
- Smithville
- Solo
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- Sparta
- Spickard
- Spokane
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- Squires
- Stanberry
- Stanton
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- Steedman
- Steele
- Steelville
- Stella
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- Success
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- Tina
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- Turners
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- Vienna
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- Warsaw
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- Watson
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- Weaubleau
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- Wellington
- Wellsville