STD Codes of Tamil Nadu
| City Name | STD Code |
|---|
| Ambasamudram | 04634 |
| Anamalai | 04253 |
| Arakandanallur | 04153 |
| Arantangi | 04371 |
| Aravakurichi | 04320 |
| Ariyalur | 04329 |
| Arkonam | 04177 |
| Arni | 04173 |
| Aruppukottai | 04566 |
| Attur | 04282 |
| Avanashi | 04296 |
| Batlagundu | 04543 |
| Bhavani | 04256 |
| Chengalpattu | 04114 |
| Chengam | 04188 |
| Chennai | 044 |
| Chidambaram | 04144 |
| Coimbatore | 0422 |
| Cuddalore | 04142 |
| Cumbum | 04554 |
| Denkanikoitah | 04347 |
| Devakottai | 04561 |
| Dharampuram | 04258 |
| Dharmapuri | 04342 |
| Dindigul | 0451 |
| Erode | 0424 |
| Gingee | 04145 |
| Gobichettipalayam | 04285 |
| Gudalur | 04262 |
| Gudiyatham | 04171 |
| Harur | 04346 |
| Hosur | 04344 |
| Jayamkondan | 04331 |
| Kallkurichi | 04151 |
| Kancheepuram | 04112 |
| Kangayam | 04257 |
| Karaikal | 04368 |
| Karaikudi | 04565 |
| Karur | 04324 |
| Keeranur | 04339 |
| Kodaikanal | 04542 |
| Kodumudi | 04204 |
| Kotagiri | 04266 |
| Kovilpatti | 04632 |
| Krishnagiri | 04343 |
| Kulithalai | 04323 |
| Kumbakonam | 0435 |
| Kuzhithurai | 04651 |
| Madurai | 0452 |
| Madurantagam | 04115 |
| Manamadurai | 04574 |
| Manaparai | 04332 |
| Mannargudi | 04367 |
| Mayiladuthurai | 04364 |
| Mettupalayam | 04254 |
| Metturdam | 04298 |
| Mudukulathur | 04576 |
| Mulanur | 04202 |
| Musiri | 04326 |
| Nagapattinam | 04365 |
| Nagercoil | 04652 |
| Namakkal | 04286 |
| Nanguneri | 04635 |
| Natham | 04544 |
| Oddanchatram | 04553 |
| Omalur | 04290 |
| Ootacamund | 0423 |
| Orathanad | 04372 |
| Palacode | 04348 |
| Palani | 04545 |
| Palladum | 04255 |
| Papanasam | 04374 |
| Paramakudi | 04564 |
| Pattukottai | 04373 |
| Perambalur | 04328 |
| Perundurai | 04294 |
| Pollachi | 04259 |
| Polur | 04181 |
| Pondicherry | 0413 |
| Ponnamaravathi | 04333 |
| Ponneri | 04119 |
| Pudukkottai | 04322 |
| Rajapalayam | 04563 |
| Ramanathpuram | 04567 |
| Rameshwaram | 04573 |
| Ranipet | 04172 |
| Rasipuram | 04287 |
| Salem | 0427 |
| Sankagiri | 04283 |
| Sankaran Koil | 04636 |
| Sathiyamangalam | 04295 |
| Sivaganga | 04575 |
| Sriperumpudur | 04111 |
| Srivaikundam | 04630 |
| Tenkasi | 04633 |
| Thanjavur | 04362 |
| Theni | 04546 |
| Thirumanglam | 04549 |
| Thiruraipoondi | 04369 |
| Thuraiyure | 04327 |
| Tindivanam | 04147 |
| Tiruchendur | 04639 |
| Tiruchengode | 04288 |
| Tirunelvelli | 0462 |
| Tirupathur | 04577 |
| Tirupattur | 04179 |
| Tirupur | 0421 |
| Tiruttani | 04118 |
| Tiruvannamalai | 04175 |
| Tiruvarur | 04366 |
| Tiruvellore | 04116 |
| Tiruvettipuram | 04182 |
| Trichy | 0431 |
| Tuticorin | 0461 |
| Udumalpet | 04252 |
| Ulundurpet | 04149 |
| Usiliampatti | 04552 |
| Uthangarai | 04341 |
| Valapady | 04292 |
| Valliyoor | 04637 |
| Vaniyambadi | 04174 |
| Vedasandur | 04551 |
| Vellore | 0416 |
| Velur | 04268 |
| Vilathikulam | 04638 |
| Villupuram | 04146 |
| Virudhachalam | 04143 |
| Virudhunagar | 04562 |
| Wandiwash | 04183 |
| Yercaud | 04281 |
| |