The TN RTO code list has 87 codes for Tamil Nadu, from TN 01 to TN 99. Each code belongs to one transport office, so the first part of a TN number plate tells you where the vehicle was registered.
All Tamil Nadu RTO codes
| Code | Office | District |
|---|---|---|
| TN 01 | Chennai Central | Chennai |
| TN 02 | Chennai North West (Anna Nagar) | Chennai |
| TN 03 | Chennai North East (Tondiarpet) | Chennai |
| TN 04 | Chennai East | Chennai |
| TN 05 | Chennai North | Chennai |
| TN 06 | Chennai South East | Chennai |
| TN 07 | Chennai South | Chennai |
| TN 09 | Chennai West | Chennai |
| TN 10 | Chennai South West | Chennai |
| TN 11 | Tambaram | Chengalpattu |
| TN 12 | Poonamallee (Paruthipattu) | Tiruvallur |
| TN 13 | Ambattur | Chennai |
| TN 14 | Sholinganallur | Chennai |
| TN 15 | Ulundurpet | Kallakurichi |
| TN 16 | Tindivanam | Villupuram |
| TN 18 | Red Hills | Chennai |
| TN 19 | Chengalpattu | Chengalpattu |
| TN 20 | Tiruvallur | Tiruvallur |
| TN 21 | Kancheepuram | Kancheepuram |
| TN 22 | Meenambakkam | Chennai |
| TN 23 | Vellore | Vellore |
| TN 24 | Krishnagiri | Krishnagiri |
| TN 25 | Tiruvannamalai | Tiruvannamalai |
| TN 28 | Namakkal North | Namakkal |
| TN 29 | Dharmapuri | Dharmapuri |
| TN 30 | Salem West | Salem |
| TN 31 | Cuddalore | Cuddalore |
| TN 32 | Villupuram | Villupuram |
| TN 33 | Erode East | Erode |
| TN 34 | Tiruchengode | Namakkal |
| TN 36 | Gobichettipalayam | Erode |
| TN 37 | Coimbatore South | Coimbatore |
| TN 38 | Coimbatore North | Coimbatore |
| TN 39 | Tiruppur North | Tiruppur |
| TN 40 | Mettupalayam | Coimbatore |
| TN 41 | Pollachi | Coimbatore |
| TN 42 | Tiruppur South | Tiruppur |
| TN 43 | Ooty | The Nilgiris |
| TN 45 | Tiruchirappalli West | Tiruchirappalli |
| TN 46 | Perambalur | Perambalur |
| TN 47 | Karur | Karur |
| TN 48 | Srirangam | Tiruchirappalli |
| TN 49 | Thanjavur | Thanjavur |
| TN 50 | Tiruvarur | Tiruvarur |
| TN 51 | Nagapattinam | Nagapattinam |
| TN 52 | Sankagiri | Salem |
| TN 54 | Salem East | Salem |
| TN 55 | Pudukkottai | Pudukkottai |
| TN 56 | Perundurai | Erode |
| TN 57 | Dindigul | Dindigul |
| TN 58 | Madurai South | Madurai |
| TN 59 | Madurai North | Madurai |
| TN 60 | Theni | Theni |
| TN 61 | Ariyalur | Ariyalur |
| TN 63 | Sivaganga | Sivaganga |
| TN 64 | Madurai Central | Madurai |
| TN 65 | Ramanathapuram | Ramanathapuram |
| TN 66 | Coimbatore Central | Coimbatore |
| TN 67 | Virudhunagar | Virudhunagar |
| TN 68 | Kumbakonam | Thanjavur |
| TN 69 | Thoothukudi (Tuticorin) | Thoothukudi |
| TN 70 | Hosur | Krishnagiri |
| TN 72 | Tirunelveli | Tirunelveli |
| TN 73 | Ranipet | Ranipet |
| TN 74 | Nagercoil | Kanniyakumari |
| TN 75 | Marthandam | Kanniyakumari |
| TN 76 | Tenkasi | Tenkasi |
| TN 77 | Attur | Salem |
| TN 78 | Dharapuram | Tiruppur |
| TN 79 | Sankarankovil | Tenkasi |
| TN 81 | Tiruchirappalli East | Tiruchirappalli |
| TN 82 | Mayiladuthurai | Mayiladuthurai |
| TN 83 | Vaniyambadi | Tirupathur |
| TN 84 | Srivilliputhur | Virudhunagar |
| TN 85 | Kundrathur | Kancheepuram |
| TN 86 | Erode West | Erode |
| TN 87 | Sriperumbudur | Kancheepuram |
| TN 88 | Namakkal South | Namakkal |
| TN 90 | Salem South | Salem |
| TN 91 | Chidambaram | Cuddalore |
| TN 92 | Tiruchendur | Thoothukudi |
| TN 93 | Mettur | Salem |
| TN 94 | Palani | Dindigul |
| TN 95 | Sivakasi | Virudhunagar |
| TN 96 | Kovilpatti | Thoothukudi |
| TN 97 | Arani | Tiruvannamalai |
| TN 99 | Coimbatore West | Coimbatore |
Things to know about TN codes
- The state transport policy note counts 12 zones, 91 RTOs and 54 unit offices; unit offices (e.g. Tiruttani, Gingee, Sulur, Manapparai, Aravakurichi, Arakkonam) register under a parent RTO's code with their own letter series.
- Chennai city is split across many codes (TN-01 to TN-14, TN-18, TN-22, TN-85, TN-87 area offices).
Tamil Nadu transport department
Registration, licences and permits in Tamil Nadu are handled by the state transport department and its offices. Official website: Commissionerate of Transport and Road Safety, Chennai (Transport Commissioner is also the State Transport Authority). Online services are on the national Parivahan Sewa portal.
Most searched TN codes
- TN 09: Chennai West
- TN 22: Meenambakkam
- TN 14: Sholinganallur
- TN 85: Kundrathur
- TN 66: Coimbatore Central
- TN 12: Poonamallee (Paruthipattu)
This list is an independent guide. Codes and offices can change when districts are created or offices move. For any official purpose, check with the state transport department or the official Vahan service.
Questions people ask
How many RTO codes are there in Tamil Nadu?
This list has 87 codes for Tamil Nadu, from TN 01 to TN 99.
What is TN 01 RTO?
TN 01 is Chennai Central, Chennai district.
How do I find which RTO a TN number belongs to?
Look at the two digits after TN and find them in the table above, or type the number into the decoder at the top of this page.