The Area Codes of Mongolia:
| City/Town or Region | Area code | |
|---|---|---|
| 1. | Sagil | 4553 (+976 4553) |
| 2. | Sagsai | 4249 (+976 4249) |
| 3. | Saikhan (Khötöl) | 3651 (+976 3651) |
| 4. | Saikhan (Saikhan-Ovoo) | 3451 (+976 3451) |
| 5. | Saikhan-Ovoo | 5952 (+976 5952) |
| 6. | Saikhandulaan | 5249 (+976 5249) |
| 7. | Sainshand city | 522 (+976 522) |
| 8. | Sant | 3253 (+976 3253) |
| 9. | Sant | 3652 (+976 3652) |
| 10. | Santmargats | 4653 (+976 4653) |
| 11. | Selenge (Khyalganat) | 3452 (+976 3452) |
| 12. | Sergelen | 5848 (+976 5848) |
| 13. | Sergelen | 2764 (+976 2764) |
| 14. | Sevrei | 5349 (+976 5349) |
| 15. | Shaamar (Dulankhaan) | 3657 (+976 3657) |
| 16. | Sharga | 4857 (+976 4857) |
| 17. | Sharyngol | 3743 (+976 3743) |
| 18. | Shilüüstei | 4653 (+976 4653) |
| 19. | Shine-Ider | 3864 (+976 3864) |
| 20. | Shinejinst | 4459 (+976 4459) |
| 21. | Shiveegovi | 5442 (+976 5442) |
| 22. | Songino | 4654 (+976 4654) |
| 23. | Sükhbaatar | 5147 (+976 5147) |
| 24. | Sükhbaatar city | 362 (+976 362) |
| 25. | Sümber | 2763 (+976 2763) |