| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 301 | Karanaithangal | Valarpuram B.O | 📍 602105 | Sriperumbudur | Branch Post Office |
| 302 | Karasangal | Padappai SO | 📍 601301 | Sriperumbudur | Post Office - PO |
| 303 | Karasangal | Karasangal BO | 📍 603310 | Maduranthakam | Branch Post Office |
| 304 | Kariamangalam | Kavanur Pudhucheri B.O | 📍 603406 | Uthiramerur | Branch Post Office |
| 305 | Karikkili | Nelvoy BO | 📍 603107 | Maduranthakam | Branch Post Office |
| 306 | Karmarapakkam | Veerapuram BO | 📍 603109 | Tirukalukundram | Branch Post Office |
| 307 | Karumbakkam | Reddipalayam BO | 📍 603101 | Chengalpattu | Branch Post Office |
| 308 | Karumbakkam | Sathanjeri BO | 📍 603106 | Uthiramerur | Branch Post Office |
| 309 | Karumbakkam | Seethananjeri BO | 📍 603106 | Uthiramerur | Branch Post Office |
| 310 | Karumbakkam | Karumbakkam BO | 📍 603108 | Chengalpattu | Branch Post Office |
| 311 | Karunagaracheri | Palliagaram BO | 📍 603107 | Maduranthakam | Branch Post Office |
| 312 | Karunagaravilagam | Morapakkam BO | 📍 603306 | Maduranthakam | Branch Post Office |
| 313 | karungulipallam | Alathur Industrial Estate BO | 📍 603110 | Tirukalukundram | Branch Post Office |
| 314 | Karunguzhipallam | Tiruporur SO | 📍 603110 | Chengalpattu | Post Office - PO |
| 315 | Karunilam | Karunilam BO | 📍 603204 | Chengalpattu | Branch Post Office |
| 316 | Karunkuzi | Karunguli SO | 📍 603303 | Maduranthakam | Post Office - PO |
| 317 | Karuppadithattadai | Ayyampettai S.O | 📍 631601 | Kancheepuram | Post Office - PO |
| 318 | Karuppur | K.Nelvoy BO | 📍 603312 | Cheyyur | Branch Post Office |
| 319 | Karur | Rajakulam B.O | 📍 631561 | Kancheepuram | Branch Post Office |
| 320 | Karuveppampoondi | Olugarai B.O | 📍 631603 | Uthiramerur | Branch Post Office |
| 321 | Kasbapuram | Mappedu BO | 📍 600126 | Tambaram | Branch Post Office |
| 322 | Kathiricheri | Kathirichery BO | 📍 603303 | Maduranthakam | Branch Post Office |
| 323 | Katrambakkam | Pennalur BO | 📍 602105 | Sriperumbudur | Branch Post Office |
| 324 | Katrambakkam | Irungattukottai S.O | 📍 602117 | Sriperumbudur | Post Office - PO |
| 325 | Kattakhazhani | Oragadam BO | 📍 603109 | Chengalpattu | Branch Post Office |
| 326 | Kattankolathur R F | Kattankolathur SO | 📍 603203 | Chengalpattu | Post Office - PO |
| 327 | Kattankolathur RF | Kattankolathur SO | 📍 603203 | Sriperumbudur | Post Office - PO |
| 328 | Kattankulam | Padur B.O | 📍 631606 | Uthiramerur | Branch Post Office |
| 329 | Kattavakkam | Parandur B.O | 📍 631552 | Kancheepuram | Branch Post Office |
| 330 | Kattiampandal | Kattiampandal BO | 📍 603314 | Uthiramerur | Branch Post Office |
| 331 | Kattudevadur | Kattudevadur BO | 📍 603313 | Maduranthakam | Branch Post Office |
| 332 | Kattugudalur | Kattugudalur BO | 📍 603301 | Maduranthakam | Branch Post Office |
| 333 | Kattukkaranai | Kattukaranai BO | 📍 603201 | Maduranthakam | Branch Post Office |
| 334 | Kattupakkam | Kavanur BO | 📍 603203 | Sriperumbudur | Branch Post Office |
| 335 | Kattuputhur | Olaiyur BO | 📍 603107 | Uthiramerur | Branch Post Office |
| 336 | Kattur | Vazhuvadur BO | 📍 603102 | Chengalpattu | Branch Post Office |
| 337 | Kattur | Venbedu BO | 📍 603110 | Chengalpattu | Branch Post Office |
| 338 | Kattur | Karanaipuduchery BO | 📍 603202 | Chengalpattu | Branch Post Office |
| 339 | Kattur R F | Vazhuvadur BO | 📍 603102 | Chengalpattu | Branch Post Office |
| 340 | Kavadur | Veeranakunnam BO | 📍 603306 | Maduranthakam | Branch Post Office |
| 341 | Kavalkazhani | Mathur B.O | 📍 602105 | Sriperumbudur | Branch Post Office |
| 342 | Kavampair | Neyyadupakkam B.O | 📍 631603 | Uthiramerur | Branch Post Office |
| 343 | Kavanipakkam | Porpandal BO | 📍 603107 | Uthiramerur | Branch Post Office |
| 344 | Kavanthandalam | Kavanthandalam B.O | 📍 631603 | Kancheepuram | Branch Post Office |
| 345 | Kavanur | Sirukalathur BO | 📍 600069 | Sriperumbudur | Branch Post Office |
| 346 | Kavanur | Kavanur BO | 📍 603203 | Sriperumbudur | Branch Post Office |
| 347 | Kavanur RF | Kavanur BO | 📍 603203 | Sriperumbudur | Branch Post Office |
| 348 | Kavanurpuducheri | Kavanur Pudhucheri B.O | 📍 603406 | Uthiramerur | Branch Post Office |
| 349 | Kavithandalam | Orakattupettai SO | 📍 603106 | Uthiramerur | Post Office - PO |
| 350 | Kayapakkam | Kayapakkam BO | 📍 603301 | Cheyyur | Branch Post Office |