| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 201 | Idayankudikadu | Dalavoy BO | 📍 621730 | Ariyalur | Branch Post Office |
| 202 | Illuppaiyur | Iluppaiyur BO | 📍 621718 | Ariyalur | Branch Post Office |
| 203 | Illuppaiyur | Vellur BO | 📍 621718 | Ariyalur | Branch Post Office |
| 204 | India cements ltd | Cement Nagar Dalavoy SO | 📍 621730 | Ariyalur | Post Office - PO |
| 205 | Indira nagar | Kallankurichi SO | 📍 621705 | Ariyalur | Post Office - PO |
| 206 | Indira nagar | Kilamaligai BO | 📍 621710 | Sendurai | Branch Post Office |
| 207 | Irudayapuram | Eravangudi BO | 📍 621803 | Udayarpalayam | Branch Post Office |
| 208 | Irugaiyur | Irugaiyur BO | 📍 612904 | Udayarpalayam | Branch Post Office |
| 209 | Irular colony | Andimadam SO | 📍 621801 | Udayarpalayam | Post Office - PO |
| 210 | Irumbilikurichi | Irumbilikurichi BO | 📍 621804 | Sendurai | Branch Post Office |
| 211 | Jalal nagar | Kilapaluvur SO | 📍 621707 | Ariyalur | Post Office - PO |
| 212 | Jeyaramapuram | Govindapuram BO | 📍 621713 | Ariyalur | Branch Post Office |
| 213 | K Kudikadu | Manakudi BO | 📍 621705 | Ariyalur | Branch Post Office |
| 214 | K Kudikadu | Koovathur BO | 📍 621803 | Udayarpalayam | Branch Post Office |
| 215 | K N Kuppam | Koovathur BO | 📍 621803 | Udayarpalayam | Branch Post Office |
| 216 | Kadambur | Kadambur BO | 📍 621701 | Udayarpalayam | Branch Post Office |
| 217 | Kadampur | Kadambur BO | 📍 621701 | Udayarpalayam | Branch Post Office |
| 218 | Kadugur | Kadugur BO | 📍 621705 | Ariyalur | Branch Post Office |
| 219 | Kaikaduvetti | Kattagaram BO | 📍 612903 | Udayarpalayam | Branch Post Office |
| 220 | Kailasapuram | Kattagaram BO | 📍 612903 | Udayarpalayam | Branch Post Office |
| 221 | Kakapalaiyam | Naduvalur BO | 📍 612904 | Udayarpalayam | Branch Post Office |
| 222 | Kalinganthurai | Ulkottai SO | 📍 612905 | Udayarpalayam | Post Office - PO |
| 223 | Kallamedu | Ottakoil BO | 📍 621705 | Ariyalur | Branch Post Office |
| 224 | Kallan kollai | Thennur BO | 📍 621805 | Udayarpalayam | Branch Post Office |
| 225 | Kallangulam | Edayar BO | 📍 621804 | Udayarpalayam | Branch Post Office |
| 226 | Kallankadu | Lingathadimedu BO | 📍 621705 | Ariyalur | Branch Post Office |
| 227 | Kallankodu | Managethi BO | 📍 621804 | Udayarpalayam | Branch Post Office |
| 228 | Kallankurichi | Kallankurichi SO | 📍 621705 | Ariyalur | Post Office - PO |
| 229 | Kallankurichi | Lingathadimedu BO | 📍 621705 | Ariyalur | Branch Post Office |
| 230 | Kallankurichi | Manakudi BO | 📍 621705 | Ariyalur | Branch Post Office |
| 231 | Kallankurichi | O Koothur BO | 📍 621705 | Ariyalur | Branch Post Office |
| 232 | Kallankurichi | Srinivasapuram BO | 📍 621705 | Ariyalur | Branch Post Office |
| 233 | Kallankurichi | Tamaraikulam BO | 📍 621705 | Ariyalur | Branch Post Office |
| 234 | Kallaru | Lingathadimedu BO | 📍 621705 | Ariyalur | Branch Post Office |
| 235 | Kallery | Kalleri BO | 📍 621803 | Udayarpalayam | Branch Post Office |
| 236 | Kallur | Vettiyur BO | 📍 621707 | Ariyalur | Branch Post Office |
| 237 | Kalumangalam | Udayarpalayam SO Ariyalur | 📍 621804 | Udayarpalayam | Post Office - PO |
| 238 | Kalvettu | Devanur BO | 📍 621806 | Udayarpalayam | Branch Post Office |
| 239 | Kamarajapuram | Idanganni BO | 📍 612904 | Udayarpalayam | Branch Post Office |
| 240 | Kamarajar nagar | Ariyalur Ariyalur SO | 📍 621704 | Ariyalur | Post Office - PO |
| 241 | Kamarasavalli | Kamarasavalli BO | 📍 621715 | Ariyalur | Branch Post Office |
| 242 | Kanakeyanpettai | Nagamangalam BO | 📍 621701 | Ariyalur | Branch Post Office |
| 243 | Kanakken palayam | Nagamangalam BO | 📍 621701 | Ariyalur | Branch Post Office |
| 244 | Kanarapalayam | Karadikulam BO | 📍 621802 | Udayarpalayam | Branch Post Office |
| 245 | Kandiankollai | Kandiankollai BO | 📍 621806 | Udayarpalayam | Branch Post Office |
| 246 | Kandiratheertham | Pudukkottai-Tirumalaivadi BO | 📍 621851 | Ariyalur | Branch Post Office |
| 247 | Kandiratheertham | Aranmanaikurichi BO | 📍 621851 | Ariyalur | Branch Post Office |
| 248 | Kandiratheertham | Kandirathitham BO | 📍 621851 | Ariyalur | Branch Post Office |
| 249 | Kandiyan kuppam | Varadarajampettai SO | 📍 621805 | Udayarpalayam | Post Office - PO |
| 250 | Kanjamalaipatti | Asaveerankudikadu SO | 📍 621719 | Sendurai | Post Office - PO |