| Place | Post Code |
|---|---|
| Thunnalai Centre, Karaveddy | None |
| Thunnalai East, Karaveddy | None |
| Thunnalai South, Karaveddy | None |
| Thunnalai West, Karaveddy | None |
| Udupiddy, Karaveddy | None |
| Udupiddy North, Karaveddy | None |
| Udupiddy South, Karaveddy | None |
| Valvetty, Karaveddy | None |
| Valvetty Centre, Karaveddy | None |