| Code | Name | Region |
|---|---|---|
| SISTA | Stanjel | 49 |
| SISTC | Stara Cerkev | 48 |
| SISTK | Stari Trg Ob Kolpi | 17 |
| SILZD | Stari Trg Pri Lozu | 57 |
| SISZA | Sezana | |
| SISKO | Skocjan | 121 |
| SILZP | Skofja Loka | 122 |
| SISKV | Skofja Vas | 11 |
| SISKF | Skofljica | 123 |
| SIVTT | Sladki Vrh | 29 |
| SISOI | Slap Ob Idrijci | 128 |
| SISLG | Slovenj Gradec | |
| SISBA | Slovenska Bistrica | |
| SISLK | Slovenske Konjice | |
| SISMR | Smarje | 50 |
| SISMA | Smarje Pri Jelsah | 124 |
| SISAP | Smarje-sap | 123 |
| SISJT | Smarjeske Toplice | 206 |
| SISNP | Smartno Na Pohorju | 113 |
| SIN83 | Smartno Ob Dreti | 83 |
| SISOP | Smartno Ob Paki | 125 |
| SISPL | Smartno Pri Litiji | 60 |
| SIPSG | Smartno Pri Slovenj Gradcu | 112 |
| SISVD | Smartno V Rozni Dolini | 11 |
| SISEC | Secovlje | 90 |
| SIS8L | Selca | 146 |
| SISOD | Selnica Ob Dravi | 108 |
| SILZB | Semic | 109 |
| SISPS | Sempas | 84 |
| SISEM | Sempeter Pri Gorici | 84 |
| SISPR | Sempeter V Savinjski Dolini | 190 |
| SISPV | Sempeter-vrtojba | 183 |
| SISNR | Sencur | 117 |
| SISEN | Senovo | 54 |
| SISZC | Senozece | 19 |
| SISET | Sentilj | 118 |
| SISE3 | Sentjanz | 130 |
| SILZQ | Sentjanz Pri Dravogradu | 25 |
| SISEJ | Sentjernej | 119 |
| SI4SS | Sentjur | 120 |
| SISE9 | Sentrupert | 190 |
| SISEP | Sentrupert | 211 |
| SIIVA | Sentvid Pri Sticni | 39 |
| SISVC | Sevnica | 110 |
| SIRDO | Radovljica | 102 |
| SIRAK | Raka | 54 |
| SIRKK | Rakek | 13 |
| SIRAT | Ratece | 53 |
| SIRNK | Ravne Na Koroskem | |
| SIRAZ | Razkrizje | 176 |