| Locality | Post Code |
|---|---|
| Shrewsbury, York | 17361 |
| Siddonsburg, York | 17019 |
| Silver Lake, York | 17339 |
| Sinsheim, York | 17362 |
| Slate Hill, York | 17314 |
| Snyder Corner, York | 17356 |
| Spring Grove, York | 17362 |
| Springettsbury Township, York | 17402 |
| Springvale, York | 17356 |
| Spry, York | 17402 |
| Starview, York | 17347 |
| Stewartstown, York | 17363 |
| Sticks, York | 17329 |
| Stonybrook, York | 17402 |
| Stoverstown, York | 17362 |
| Strinestown, York | 17345 |
| Sunnyburn, York | 17302 |
| Thomasville, York | 17364 |
| Tolna, York | 17349 |
| Wellsville, York | 17365 |
| West Bangor, York | 17314 |
| West Manchester, York | 17408 |
| West York, York | 17404 |
| Westfield Ter, York | 17070 |
| Windsor, York | 17366 |
| Windsor Park, York | 17403 |