| Place | Post Code |
|---|---|
| Karanai, Tirukkoyilur | 605755 |
| Karuna Chetti Thanagal, Tirukkoyilur | 605754 |
| Kathalanthittu, Tirukkoyilur | 605803 |
| Kattupaiyur, Tirukkoyilur | 605766 |
| Kazhumalam, Tirukkoyilur | 605754 |
| Keelakondur, Tirukkoyilur | 605755 |
| Keerimedu, Tirukkoyilur | 607203 |
| Kilvalai, Tirukkoyilur | 605701 |
| Kingilivadai, Tirukkoyilur | 605755 |
| Kodukkapattu, Tirukkoyilur | 605756 |
| Kolaparai, Tirukkoyilur | 605751 |
| Kollur, Tirukkoyilur | 605752 |
| Kolundriampattu, Tirukkoyilur | 605766 |
| Komalur, Tirukkoyilur | 606205 |
| Konganamoor, Tirukkoyilur | 605754 |
| Kongarayanur, Tirukkoyilur | 607203 |
| Konnakkalavadi, Tirukkoyilur | 606205 |
| Korakkan Thangal, Tirukkoyilur | 605803 |
| Kottagam, Tirukkoyilur | 605754 |
| Kottamarudur, Tirukkoyilur | 605756 |
| Kottamedu, Tirukkoyilur | 605751, 605752 |
| Krishna Nagar, Tirukkoyilur | 605755 |
| Kudamurutti, Tirukkoyilur | 605756 |
| Kuladeepamangalam, Tirukkoyilur | 605756 |
| Kuppathumedu, Tirukkoyilur | 605751 |
| Kuvanur, Tirukkoyilur | 605766 |