| Place | Post Code |
|---|---|
| Sengulam, Ambasamudram | 627416, 627602 |
| Sengulam Colony, Ambasamudram | 627451 |
| Seon Nagar, Ambasamudram | 627415 |
| Servaikaranpatti, Ambasamudram | 627415 |
| Singamparai, Ambasamudram | 627601 |
| Singampatti, Ambasamudram | 627416 |
| Singampatti Zamindar Forest, Ambasamudram | 627416 |
| Sivanthipuram, Ambasamudram | 627425 |
| Sivasaailam, Ambasamudram | 627412 |
| Sivasailam, Ambasamudram | 627412 |
| South Poolangulam, Ambasamudram | 627415 |
| Subramaniapuram, Ambasamudram | 627401 |
| Tana, Ambasamudram | 627425 |
| Tentiruppavanam, Ambasamudram | 627426 |
| Tentiruppuvanam, Ambasamudram | 627426 |
| Terku Ariyanayakipuram, Ambasamudram | 627603, 627601 |
| Thalarkulam, Ambasamudram | 627601 |
| Thayapanagar, Ambasamudram | 627421 |