| शहर/नगर या शेत्र | क्षेत्र कोड |
| 1. | Sabang | 0652 |
| 2. | Salatiga | 0298 |
| 3. | Samarinda, Kutai Kartanegara | 0541 |
| 4. | Sambas, Bengkayang, Singkawang | 0562 |
| 5. | Samosir | 0626 |
| 6. | Sampang | 0323 |
| 7. | Sanggau, Sekadau | 0564 |
| 8. | Sangihe Islands | 0432 |
| 9. | Sarmi | 0966 |
| 10. | Sarolangun | 0745 |
| 11. | Saumlaki | 0918 |
| 12. | Sawahlunto, Sijunjung, Dharmasraya | 0754 |
| 13. | Selayar Islands | 0414 |
| 14. | Semarang | 024 |
| 15. | Serui | 0963 |
| 16. | Seruyan, Kotawaringin | 0539 |
| 17. | Siak | 0764 |
| 18. | Sikka | 0382 |
| 19. | Simeulue | 0650 |
| 20. | Singkil | 0658 |
| 21. | Sinjai | 0482 |
| 22. | Sintang | 0565 |
| 23. | Situbondo | 0338 |
| 24. | Solo, Sragen, Karanganyar, Sukoharjo | 0271 |
| 25. | Solok, South Solok | 0755 |
| 26. | Soppeng | 0484 |
| 27. | Sorong | 0951 |
| 28. | South Aceh | 0656 |
| 29. | South Aceh | 0657 |
| 30. | South Barito, East Barito | 0526 |
| 31. | South Bengkulu, Kaur | 0739 |
| 32. | South Lampung | 0727 |
| 33. | South Minahasa | 0430 |
| 34. | South Nias | 0630 |
| 35. | South Pesisir | 0756 |
| 36. | South Pesisir | 0757 |
| 37. | South Tapanuli | 0635 |
| 38. | South Tapanuli, Padang Sidempuan | 0634 |
| 39. | Southeast Aceh | 0629 |
| 40. | Southwest Aceh | 0659 |
| 41. | Subang | 0260 |
| 42. | Subulussalam | 0627 |
| 43. | Sukabumi | 0266 |
| 44. | Sumba | 0387 |
| 45. | Sumbawa | 0371 |
| 46. | Sumedang | 0261 |
| 47. | Sumenep | 0328 |
| 48. | Surabaya, Gresik, Sidoarjo, Bangkalan | 031 |