| Code | Name | Region |
|---|---|---|
| SKSKE | Skalite | ZI |
| SKSKZ | Skalite-zwardon | ZI |
| SKSLV | Sladkovicovo | |
| SKS8M | Slanske Nove Mesto | KI |
| SKVEC | Slavec | KI |
| SKSLC | Slavosovce | KI |
| SKSLD | Sliac | |
| SKSLO | Slovenska Lupca | |
| SKSDA | Slovenske Darmoty | BC |
| SKSSA | Slovenske Nove Mesto | KI |
| SKSZY | Smizany | |
| SKSMO | Smolenice | TA |
| SKSNA | Snina | |
| SKSOB | Sobrance | |
| SKSOK | Sokolce | NI |
| SKSKC | Sokolovce | TA |
| SKSOP | Soporna | |
| SKSHA | Sahy | NI |
| SKSJH | Sajdikove Humence | TA |
| SKSAA | Sala | |
| SKSLA | Sala | |
| SKSAL | Salka | NI |
| SKSZG | Samorin | TA |
| SKSEN | Sankovce | |
| SKMLY | Sarisske Michal'any | |
| SKSAK | Sarkan | NI |
| SKSAR | Sarovce | NI |
| SKSEB | Sebedrazie | TC |
| SKSVC | Secovce | |
| SKSLP | Selpice | |
| SKSNE | Senec | |
| SKSNI | Senica | BC |
| SKSEA | Senica | TA |
| SKSNC | Senica, Okres | |
| SKSKV | Senkvice | |
| SKSER | Sered | |
| SKSIB | Siatorska Bukovinka | BC |
| SKRKA | Rakova | |
| SKRAL | Raslavice | PV |
| SKRAZ | Raztocno | TC |
| SKREV | Revuca | |
| SKRST | Rimavska Sobota | BC |
| SKRZY | Rimavske Zaluzany | BC |
| SKXXX | Ris Inland Waterways | |
| SKRCE | Risnovce | NI |
| SKSLZ | Rohoznik | BL |
| SKRSA | Rosina | ZI |
| SKRVK | Rovinka | |
| SKRVN | Rovne | |
| SKROZ | Roznava | KI |