All Cities by State:
- Sabina
- Saint Clairsville
- Saint Henry
- Saint Johns
- Saint Louisville
- Saint Marys
- Saint Paris
- Salem
- Salineville
- Sandusky
- Sandyville
- Sarahsville
- Sardinia
- Sardis
- Savannah
- Scio
- Scioto Furnace
- Scott
- Scottown
- Seaman
- Sebring
- Sedalia
- Senecaville
- Seven Mile
- Seville
- Shadyside
- Shandon
- Sharon Center
- Shauck
- Shawnee
- Shelby
- Sherrodsville
- Sherwood
- Shiloh
- Shreve
- Sidney
- Sinking Spring
- Smithfield
- Smithville
- Somerdale
- Somerset
- Somerville
- South Charleston
- South Lebanon
- South Point
- South Salem
- South Solon
- South Vienna
- South Webster
- Southington
- Sparta
- Spencer
- Spencerville
- Spring Valley
- Springboro
- Springfield
- Sterling
- Steubenville
- Stewart
- Stillwater
- Stockport
- Stone Creek
- Stony Ridge
- Stout
- Stoutsville
- Strasburg
- Stratton
- Struthers
- Stryker
- Sugar Grove
- Sugarcreek
- Sullivan
- Sulphur Springs
- Summerfield
- Summit Station
- Summitville
- Sunbury
- Swanton
- Sycamore
- Sycamore Valley
- Sylvania
- Syracuse
