| Sr. | City Name (State) | STD Code |
| 1 | Chennai (Tamil Nadu) | 044 |
| 2 | Pondicherry (Tamil Nadu) | 0413 |
| 3 | Vellore (Tamil Nadu) | 0416 |
| 4 | Tirupur (Tamil Nadu) | 0421 |
| 5 | Coimbatore (Tamil Nadu) | 0422 |
| 6 | Ootacamund (Tamil Nadu) | 0423 |
| 7 | Erode (Tamil Nadu) | 0424 |
| 8 | Salem (Tamil Nadu) | 0427 |
| 9 | Trichy (Tamil Nadu) | 0431 |
| 10 | Kumbakonam (Tamil Nadu) | 0435 |
| 11 | Dindigul (Tamil Nadu) | 0451 |
| 12 | Madurai (Tamil Nadu) | 0452 |
| 13 | Tuticorin (Tamil Nadu) | 0461 |
| 14 | Tirunelvelli (Tamil Nadu) | 0462 |
| 15 | Cuddalore (Tamil Nadu) | 04142 |
| 16 | Virudhachalam (Tamil Nadu) | 04143 |
| 17 | Chidambaram (Tamil Nadu) | 04144 |
| 18 | Gingee (Tamil Nadu) | 04145 |
| 19 | Villupuram (Tamil Nadu) | 04146 |
| 20 | Tindivanam (Tamil Nadu) | 04147 |
| 21 | Ulundurpet (Tamil Nadu) | 04149 |
| 22 | Kallkurichi (Tamil Nadu) | 04151 |
| 23 | Arakandanallur (Tamil Nadu) | 04153 |
| 24 | Gudiyatham (Tamil Nadu) | 04171 |
| 25 | Ranipet (Tamil Nadu) | 04172 |
| 26 | Arni (Tamil Nadu) | 04173 |
| 27 | Vaniyambadi (Tamil Nadu) | 04174 |
| 28 | Tiruvannamalai (Tamil Nadu) | 04175 |
| 29 | Arkonam (Tamil Nadu) | 04177 |
| 30 | Tirupattur (Tamil Nadu) | 04179 |
| 31 | Polur (Tamil Nadu) | 04181 |
| 32 | Tiruvettipuram (Tamil Nadu) | 04182 |
| 33 | Wandiwash (Tamil Nadu) | 04183 |
| 34 | Chengam (Tamil Nadu) | 04188 |
| 35 | Mulanur (Tamil Nadu) | 04202 |
| 36 | Kodumudi (Tamil Nadu) | 04204 |
| 37 | Udumalpet (Tamil Nadu) | 04252 |
| 38 | Anamali (Tamil Nadu) | 04253 |
| 39 | Mettupalayam (Tamil Nadu) | 04254 |
| 40 | Palladum (Tamil Nadu) | 04255 |
| 41 | Bhavani (Tamil Nadu) | 04256 |
| 42 | Kangayam (Tamil Nadu) | 04257 |
| 43 | Dharampuram (Tamil Nadu) | 04258 |
| 44 | Pollachi (Tamil Nadu) | 04259 |
| 45 | Gudalur (Tamil Nadu) | 04262 |
| 46 | Kotagiri (Tamil Nadu) | 04266 |
| 47 | Velur (Tamil Nadu) | 04268 |
| 48 | Yercaud (Tamil Nadu) | 04281 |
| 49 | Attur (Tamil Nadu) | 04282 |
| 50 | Sankagiri (Tamil Nadu) | 04283 |
| 51 | Gobichettipalayam (Tamil Nadu) | 04285 |
| 52 | Namakkal (Tamil Nadu) | 04286 |
| 53 | Rasipuram (Tamil Nadu) | 04287 |
| 54 | Tiruchengode (Tamil Nadu) | 04288 |
| 55 | Omalpur (Tamil Nadu) | 04290 |
| 56 | Valapady (Tamil Nadu) | 04292 |
| 57 | Perundurai (Tamil Nadu) | 04294 |
| 58 | Sathiyamangalam (Tamil Nadu) | 04295 |
| 59 | Avanashi (Tamil Nadu) | 04296 |
| 60 | Metturdam (Tamil Nadu) | 04298 |
| 61 | Aravakurichi (Tamil Nadu) | 04320 |
| 62 | Pudukkottai (Tamil Nadu) | 04322 |
| 63 | Kulithalai (Tamil Nadu) | 04323 |
| 64 | Karur (Tamil Nadu) | 04324 |
| 65 | Musiri (Tamil Nadu) | 04326 |
| 66 | Thuraiyure (Tamil Nadu) | 04327 |
| 67 | Perambalur (Tamil Nadu) | 04328 |
| 68 | Ariyalur (Tamil Nadu) | 04329 |
| 69 | Jayamkondan (Tamil Nadu) | 04331 |
| 70 | Manaparai (Tamil Nadu) | 04332 |
| 71 | Ponnamaravathi (Tamil Nadu) | 04333 |
| 72 | Keeranur (Tamil Nadu) | 04339 |
| 73 | Uthangarai (Tamil Nadu) | 04341 |
| 74 | Dharmapuri (Tamil Nadu) | 04342 |
| 75 | Krishnagiri (Tamil Nadu) | 04343 |
| 76 | Hosur (Tamil Nadu) | 04344 |
| 77 | Harur (Tamil Nadu) | 04346 |
| 78 | Denkanikoitah (Tamil Nadu) | 04347 |
| 79 | Palacode (Tamil Nadu) | 04348 |
| 80 | Thanjavur (Tamil Nadu) | 04362 |
| 81 | Mayiladutjurai (Tamil Nadu) | 04364 |
| 82 | Nagapattinam (Tamil Nadu) | 04365 |
| 83 | Tiruvarur (Tamil Nadu) | 04366 |
| 84 | Mannargudi (Tamil Nadu) | 04367 |
| 85 | Karaikal (Tamil Nadu) | 04368 |
| 86 | Thiruraipoondi (Tamil Nadu) | 04369 |
| 87 | Arantangi (Tamil Nadu) | 04371 |
| 88 | Orathanad (Tamil Nadu) | 04372 |
| 89 | Pattukottai (Tamil Nadu) | 04373 |
| 90 | Papanasam (Tamil Nadu) | 04374 |
| 91 | Kodaikanal (Tamil Nadu) | 04542 |
| 92 | Batlagundu (Tamil Nadu) | 04543 |
| 93 | Natham (Tamil Nadu) | 04544 |
| 94 | Palani (Tamil Nadu) | 04545 |
| 95 | Theni (Tamil Nadu) | 04546 |
| 96 | Thirumanglam (Tamil Nadu) | 04549 |
| 97 | Vedasandur (Tamil Nadu) | 04551 |
| 98 | Usiliampatti (Tamil Nadu) | 04552 |
| 99 | Oddanchatram (Tamil Nadu) | 04553 |
| 100 | Cumbum (Tamil Nadu) | 04554 |
| 101 | Devakottai (Tamil Nadu) | 04561 |
| 102 | Virudhunagar (Tamil Nadu) | 04562 |
| 103 | Rajapalayam (Tamil Nadu) | 04563 |
| 104 | Paramakudi (Tamil Nadu) | 04564 |
| 105 | Karaikudi (Tamil Nadu) | 04565 |
| 106 | Aruppukottai (Tamil Nadu) | 04566 |
| 107 | Ramanathpuram (Tamil Nadu) | 04567 |
| 108 | Rameshwaram (Tamil Nadu) | 04573 |
| 109 | Manamadurai (Tamil Nadu) | 04574 |
| 110 | Sivaganga (Tamil Nadu) | 04575 |
| 111 | Mudukulathur (Tamil Nadu) | 04576 |
| 112 | Tirupathur (Tamil Nadu) | 04577 |
| 113 | Srivaikundam (Tamil Nadu) | 04630 |
| 114 | Kovilpatti (Tamil Nadu) | 04632 |
| 115 | Tenkasi (Tamil Nadu) | 04633 |
| 116 | Ambasamudram (Tamil Nadu) | 04634 |
| 117 | Nanguneri (Tamil Nadu) | 04635 |
| 118 | Sankaran Koil (Tamil Nadu) | 04636 |
| 119 | Valliyoor (Tamil Nadu) | 04637 |
| 120 | Vilathikulam (Tamil Nadu) | 04638 |
| 121 | Tiruchendur (Tamil Nadu) | 04639 |
| 122 | Kuzhithurai (Tamil Nadu) | 04651 |
| 123 | Nagarcoil (Tamil Nadu) | 04652 |