| Place | Post Code |
|---|---|
| Keelnariyappanur, Kallakkurichi | 606204 |
| Kilkuppam, Kallakkurichi | 606301 |
| Kilpoondi, Kallakkurichi | 606201 |
| Kongarayapalayam, Kallakkurichi | 606203 |
| Koothakudi, Kallakkurichi | 606305 |
| Kottaiyur, Kallakkurichi | 606305 |
| Kudikadu, Kallakkurichi | 606213 |
| Kudiraichandal, Kallakkurichi | 606213 |
| Kudiyanallur, Kallakkurichi | 606206 |
| Kugaiyur, Kallakkurichi | 606301 |
| Kulanthangal, Kallakkurichi | 606206 |
| Kunniyur, Kallakkurichi | 606205 |
| Kuppusamy Nagar, Kallakkurichi | 606206 |
| Kural, Kallakkurichi | 606301 |
| Kurur, Kallakkurichi | 606203 |
| Lachiyam, Kallakkurichi | 606204 |
| Madam, Kallakkurichi | 606206, 605766, 605759 |
| Madavacherry, Kallakkurichi | 606207 |
| Madur, Kallakkurichi | 606206 |
| Maharur, Kallakkurichi | 606204 |
| Malaikottalam, Kallakkurichi | 606203 |
| Manmalai, Kallakkurichi | 606207 |
| Maravanattam, Kallakkurichi | 606201 |
| Mathur, Kallakkurichi | 606207 |
| Mattigaikurichi, Kallakkurichi | 606207 |
| Melnariyappanur, Kallakkurichi | 606201 |