| Place | Post Code |
|---|---|
| Kezha Kuruvadi, Nagapattinam | 609702 |
| Kezha Manickapangu, Nagapattinam | 611102 |
| Kezhapolagam, Nagapattinam | 609702 |
| Kidamangalam, Nagapattinam | 609601 |
| Kilabudanur, Nagapattinam | 609704 |
| Kilaiyur, Nagapattinam | 611103, 609304, 609105 |
| Kilathanjavur, Nagapattinam | 610101 |
| Kiluveli, Nagapattinam | 611108 |
| Koil Seeyathamangai, Nagapattinam | 609702 |
| Kongaryanallur, Nagapattinam | 609503 |
| Kootapattarthoppu, Nagapattinam | 609702 |
| Kottaguram, Nagapattinam | 611108 |
| Kottapadi, Nagapattinam | 609601 |
| Kottarakudi, Nagapattinam | 610101 |
| Kottur, Nagapattinam | 609701 |
| Kovilpathu, Nagapattinam | 611002 |
| Kulamanickam, Nagapattinam | 610101 |
| Kulmedu, Nagapattinam | 609503 |
| Kunar, Nagapattinam | 609503 |
| Kuruchi, Nagapattinam | 611102 |
| Kurumbur, Nagapattinam | 609601 |
| Kuruvayal, Nagapattinam | 611109 |
| Kuttalam, Nagapattinam | 609703 |
| Kuttiandavar East Saint, Nagapattinam | 611108 |
| Kuttiandavar North Saint, Nagapattinam | 611108 |
| Kuttiandavar Saint, Nagapattinam | 611108 |