| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 301 | Kiliyapattu | Kulumur BO | 📍 621714 | Sendurai | Branch Post Office |
| 302 | KK nagar | Rajajinagar SO Ariyalur | 📍 621713 | Ariyalur | Post Office - PO |
| 303 | kodali | Kodalikaruppur SO | 📍 612902 | Udayarpalayam | Post Office - PO |
| 304 | Kodalikaruppur | Kodali BO | 📍 612902 | Udayarpalayam | Branch Post Office |
| 305 | Kodalikaruppur | Kodalikaruppur SO | 📍 612902 | Udayarpalayam | Post Office - PO |
| 306 | Kodalikaruppur | Anikduichan BO | 📍 621803 | Udayarpalayam | Branch Post Office |
| 307 | Kodangudi North | Thathampettai Palur SO | 📍 612904 | Udayarpalayam | Post Office - PO |
| 308 | Kodangudi South | Thathampettai Palur SO | 📍 612904 | Udayarpalayam | Post Office - PO |
| 309 | Kodukkur | Kodukkur BO | 📍 621719 | Udayarpalayam | Branch Post Office |
| 310 | Koilseemai | Kadambur BO | 📍 621701 | Udayarpalayam | Branch Post Office |
| 311 | Koilvazagai | Tirukalappur BO | 📍 621805 | Udayarpalayam | Branch Post Office |
| 312 | Kokkaranai | Kidaramkondan BO | 📍 612901 | Udayarpalayam | Branch Post Office |
| 313 | Kokkaranai | Kilaneduvoi BO | 📍 621805 | Udayarpalayam | Branch Post Office |
| 314 | Kolaiyanur | Ulliakudi BO | 📍 621701 | Udayarpalayam | Branch Post Office |
| 315 | Kolappadi | Andimadam SO | 📍 621801 | Udayarpalayam | Post Office - PO |
| 316 | Kollakaranpatti | Pudukudi BO | 📍 621806 | Udayarpalayam | Branch Post Office |
| 317 | Kollapuram | Ameenabad BO | 📍 621713 | Ariyalur | Branch Post Office |
| 318 | Koman | Kadambur BO | 📍 621701 | Udayarpalayam | Branch Post Office |
| 319 | Kommedu | Kilakudiyiruppu BO | 📍 621802 | Udayarpalayam | Branch Post Office |
| 320 | Konadipatti | Sirukalathur BO | 📍 621710 | Sendurai | Branch Post Office |
| 321 | Kondankulam | Sirukalathur BO | 📍 621710 | Sendurai | Branch Post Office |
| 322 | Kondippatti | Sirukalathur BO | 📍 621710 | Sendurai | Branch Post Office |
| 323 | Koneri rayapuram | Lingathadimedu BO | 📍 621705 | Ariyalur | Branch Post Office |
| 324 | Koodalur | Dalavoy BO | 📍 621730 | Ariyalur | Branch Post Office |
| 325 | Koothangudi | Idanganni BO | 📍 612904 | Udayarpalayam | Branch Post Office |
| 326 | Koovathur North | Koovathur BO | 📍 621803 | Udayarpalayam | Branch Post Office |
| 327 | Koovathur RF | Kallathur Thandalai SO | 📍 621803 | Udayarpalayam | Post Office - PO |
| 328 | Koovathur South | Koovathur BO | 📍 621803 | Udayarpalayam | Branch Post Office |
| 329 | Koraikuli | Ulliakudi BO | 📍 621701 | Udayarpalayam | Branch Post Office |
| 330 | Kovil Esanai East | Koilesanai BO | 📍 621851 | Ariyalur | Branch Post Office |
| 331 | Kovil Esanai West | Koilesanai BO | 📍 621851 | Ariyalur | Branch Post Office |
| 332 | Kovilur | Kovilur BO | 📍 621715 | Ariyalur | Branch Post Office |
| 333 | Kozhavankuzhi | Ilayaperumanallur BO | 📍 612903 | Udayarpalayam | Branch Post Office |
| 334 | KPN nagar | Valajanagaram BO | 📍 621704 | Ariyalur | Branch Post Office |
| 335 | Krishnapuram | O Koothur BO | 📍 621705 | Ariyalur | Branch Post Office |
| 336 | Kudikkadu | Olaiyur BO | 📍 608901 | Udayarpalayam | Branch Post Office |
| 337 | Kulaikottai | Ulliakudi BO | 📍 621701 | Udayarpalayam | Branch Post Office |
| 338 | Kulamanickam East | Kulamanickam BO | 📍 621722 | Ariyalur | Branch Post Office |
| 339 | Kulamanickam West | Kulamanickam BO | 📍 621722 | Ariyalur | Branch Post Office |
| 340 | Kulumur | Kulumur BO | 📍 621714 | Sendurai | Branch Post Office |
| 341 | Kulumur | Neivanam BO | 📍 621714 | Sendurai | Branch Post Office |
| 342 | Kumaramangalam | Kilakolathur BO | 📍 621715 | Ariyalur | Branch Post Office |
| 343 | Kumaran kaduvettu | Kumiliankuli BO | 📍 621803 | Udayarpalayam | Branch Post Office |
| 344 | Kumilankuzhi | Kumiliankuli BO | 📍 621803 | Udayarpalayam | Branch Post Office |
| 345 | Kumiliam | Kumiliam BO | 📍 621804 | Udayarpalayam | Branch Post Office |
| 346 | Kumiliankulam | Silambur BO | 📍 608901 | Udayarpalayam | Branch Post Office |
| 347 | Kumiliankuzhi | Alagapuram BO | 📍 608901 | Udayarpalayam | Branch Post Office |
| 348 | Kumunanthurai | Govindaputhur BO | 📍 621701 | Udayarpalayam | Branch Post Office |
| 349 | kunamangalam | Kunamangalam BO | 📍 621701 | Udayarpalayam | Branch Post Office |
| 350 | Kundaveli East | Kundaveli BO | 📍 612903 | Udayarpalayam | Branch Post Office |