| Code | Name | Region |
|---|---|---|
| AUSSP | Silver Plains | QLD |
| AUSVD | Silverdale | NSW |
| AUSIL | Silverwater | NSW |
| AUSIX | Singleton | NSW |
| AUSCK | Sisters Creek | TAS |
| AUSKA | Skardon River | QLD |
| AUSKV | Skua Venture (oil Terminal) | NT |
| AUSKY | Skye | SA |
| AUSMG | Smeaton Grange | NSW |
| AUSHU | Smith Point | NT |
| AUSMD | Smithfield | NSW |
| AUSGY | Smiths Gully | VIC |
| AUSIO | Smithton | TAS |
| AUSNB | Snake Bay | NT |
| AUWSS | Snowtown | SA |
| AUSMY | Somersby | NSW |
| AUSST | Somerset | TAS |
| AUFTH | Seaforth | NSW |
| AUILM | Seaholme | VIC |
| AUSET | Seaton | SA |
| AUSSD | Seddon | VIC |
| AUNS9 | Sefton | NSW |
| AU5CI | Selby | VIC |
| AUSBH | Sellick Beach | SA |
| AUSSH | Sellicks Hill | SA |
| AUSFD | Seppeltsfield | SA |
| AUSVH | Seven Hills | NSW |
| AUSVL | Sevenhill | SA |
| AUSMR | Seventeen Mile Rocks/brisbane | QLD |
| AUSVI | Seville | VIC |
| AUSEY | Seymour | VIC |
| AUSHB | Shark Bay | WA |
| AUSWB | Shaw River | WA |
| AUSGP | Shay Gap | WA |
| AUSOL | Shea Oak Log | SA |
| AUSSY | Shelley | WA |
| AUSHH | Shellharbour | NSW |
| AUSXE | Sale | VIC |
| AUSAL | Salisbury | SA |
| AUSPL | Salisbury Plain | SA |
| AUSBY | Salisbury/brisbane | QLD |
| AUWAS | Salmon Gums | WA |
| AUSGT | Sandgate | NSW |
| AUSRM | Sandringham | QLD |
| AUNDS | Sandstone | WA |
| AUS8N | Sans Souci | NSW |
| AUSSF | Sassafras | VIC |
| AUSWL | Sawtell | NSW |
| AUSCB | Scarborough | WA |
| AUH8S | Schofields | NSW |