| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Korapattarai, Katpadi | 632202 |
| Postal/ZIP Codes in Kosavanpudur, Katpadi | 635803 |
| Postal/ZIP Codes in Kothamangalam, Katpadi | 632104 |
| Postal/ZIP Codes in Kothur, Katpadi | 632516 |
| Postal/ZIP Codes in Kottaimedu, Katpadi | 632202 |
| Postal/ZIP Codes in Kottaimottur, Katpadi | 632202, 632059 |
| Postal/ZIP Codes in Kottanatham, Katpadi | 632520 |
| Postal/ZIP Codes in Kottur, Katpadi | 635808, 635810 |
| Postal/ZIP Codes in Krishnapuram, Katpadi | 632202, 632203 |
| Postal/ZIP Codes in Krishnapuram Colony, Katpadi | 632202 |
| Postal/ZIP Codes in Kukkalapalli, Katpadi | 632202 |
| Postal/ZIP Codes in Kumananthangal, Katpadi | 632520 |
| Postal/ZIP Codes in Kundur, Katpadi | 632202 |
| Postal/ZIP Codes in Kuppatha Mottoor, Katpadi | 632519 |
| Postal/ZIP Codes in Kuppireddiyur, Katpadi | 632520 |
| Postal/ZIP Codes in Kurampalli, Katpadi | 632515 |
| Postal/ZIP Codes in Kuravar Colony, Katpadi | 632515 |
| Postal/ZIP Codes in Kurinji Nagar, Katpadi | 632201 |