The Area Codes of Tonga:
| City/Town or Region | Area code | |
|---|---|---|
| 1. | Nakulo | 35 (+676 35) |
| 2. | Nakulo | 36 (+676 36) |
| 3. | Neiafu | 70 (+676 70) |
| 4. | Neiafu | 71 (+676 71) |
| 5. | Neiafu | 74 (+676 74) |
| 6. | Neiafu | 79 (+676 79) |
| 7. | Niuafo'ou | 80 (+676 80) |
| 8. | Niuatoputapu | 85 (+676 85) |
| 9. | Nuku'alofa | 20 (+676 20) |
| 10. | Nuku'alofa | 21 (+676 21) |
| 11. | Nuku'alofa | 22 (+676 22) |
| 12. | Nuku'alofa | 23 (+676 23) |
| 13. | Nuku'alofa | 24 (+676 24) |
| 14. | Nuku'alofa | 25 (+676 25) |
| 15. | Nuku'alofa | 26 (+676 26) |
| 16. | Nuku'alofa | 27 (+676 27) |
| 17. | Nuku'alofa | 28 (+676 28) |