| Place | Post Code |
|---|---|
| Kilaneduvoi, Udayarpalayam | 621805 |
| Kilaveli, Udayarpalayam | 621804 |
| Kodali, Udayarpalayam | 612902 |
| Kodalikaruppur, Udayarpalayam | 612902, 621803 |
| Kodangudi, Udayarpalayam | 612904 |
| Kodukkur, Udayarpalayam | 621719 |
| Koilseemai, Udayarpalayam | 621701 |
| Koilvazagai, Udayarpalayam | 621805 |
| Kokkaranai, Udayarpalayam | 612901, 621805 |
| Kolaiyanur, Udayarpalayam | 621701 |
| Kolappadi, Udayarpalayam | 621801 |
| Kollakaranpatti, Udayarpalayam | 621806 |
| Kollapuram, Udayarpalayam | 621713 |
| Koman, Udayarpalayam | 621701 |
| Kommedu, Udayarpalayam | 621802 |
| Koothangudi, Udayarpalayam | 612904 |
| Koovathur, Udayarpalayam | 621803 |
| Koraikuli, Udayarpalayam | 621701 |
| Kozhavankuzhi, Udayarpalayam | 612903 |
| Kudikkadu, Udayarpalayam | 608901 |
| Kulaikottai, Udayarpalayam | 621701 |
| Kulathur, Udayarpalayam | 621803 |
| Kulothunganallur, Udayarpalayam | 612901 |
| Kumaran Kaduvettu, Udayarpalayam | 621803 |
| Kumilankuzhi, Udayarpalayam | 621803 |
| Kumiliankulam, Udayarpalayam | 608901 |
| All postal codes in Ariyalur | |
|---|---|
| Ariyalur, Ariyalur | |
| Sendurai, Ariyalur | |
| Udayarpalayam, Ariyalur | |