区号中华人民共和国 (中国):
| 市/镇或地区 | 区号 | |
|---|---|---|
| 1. | Sanmenxia | 398 |
| 2. | Sanming | 598 |
| 3. | Shanghai | 21 |
| 4. | Shangqiu | 370 |
| 5. | Shangrao | 793 |
| 6. | Shangzhou | 914 |
| 7. | Shannan | 893 |
| 8. | Shantou | 754 |
| 9. | Shanwei | 660 |
| 10. | Shaoguan | 751 |
| 11. | Shaoxing | 575 |
| 12. | Shaoyang | 739 |
| 13. | Shenyang, Tieling, Fushun, Benxi | 24 |
| 14. | Shenzhen | 755 |
| 15. | Shigatse | 892 |
| 16. | Shihezi | 993 |
| 17. | Shijiazhuang | 311 |
| 18. | Shiyan | 719 |
| 19. | Shizuishan | 952 |
| 20. | Shuangyashan | 469 |
| 21. | Shuozhou | 349 |
| 22. | Simao | 879 |
| 23. | Siping | 434 |
| 24. | Songyuan | 438 |
| 25. | Suihua | 455 |
| 26. | Suining | 825 |
| 27. | Suizhou | 722 |
| 28. | Suqian | 527 |
| 29. | Suzhou | 557 |
| 30. | Suzhou | 512 |