Tamil Nadu RTO code list (TN): every code and office
The short answer
The two digits after TN name the Regional Transport Office that registered the vehicle. To decode a full plate or another state's code, use the RTO code lookup.
Last verified
Tamil Nadu RTO codes and offices
Sample-verified: 9 of 88 codes checked against the official transport department list and independent directories.
| Code | Office |
|---|---|
| TN01 | Chennai (Central): Ayanavaram |
| TN02 | Chennai (North West): New Avadi Road |
| TN03 | Chennai (North East): Tondiarpet |
| TN04 | Chennai (East): Basin Bridge |
| TN05 | Chennai (North): Kolathur |
| TN06 | Chennai (South East): Mandavelli |
| TN07 | Chennai (South): Thiruvanmiyur |
| TN09 | Chennai (West): K. K. Nagar |
| TN10 | Chennai (South West): Valasaravakkam |
| TN11 | Tambaram |
| TN12 | Poonamallee |
| TN13 | Ambattur |
| TN14 | Sholinganallur |
| TN15 | Ulundurpet |
| TN16 | Tindivanam |
| TN18 | Red Hills |
| TN19 | Chengalpattu |
| TN20 | Tiruvallur |
| TN21 | Kanchipuram |
| TN22 | Meenambakkam |
| TN23 | Vellore |
| TN24 | Krishnagiri |
| TN25 | Thiruvannamalai |
| TN27 | Salem |
| TN28 | Namakkal (North) |
| TN29 | Dharmapuri |
| TN30 | Salem (West) |
| TN31 | Cuddalore |
| TN32 | Villupuram |
| TN33 | Erode (East) |
| TN34 | Tiruchengode |
| TN36 | Gobichettipalayam |
| TN37 | Coimbatore (South) |
| TN38 | Coimbatore (North) |
| TN39 | Tirupur (North) |
| TN40 | Mettupalayam |
| TN41 | Pollachi |
| TN42 | Tirupur (South) |
| TN43 | Udagamandalam (Ooty) |
| TN45 | Tiruchirapalli (West) |
| TN46 | Perambalur |
| TN47 | Karur |
| TN48 | Srirangam |
| TN49 | Thanjavur |
| TN50 | Tiruvarur |
| TN51 | Nagapattinam |
| TN52 | Sankagiri |
| TN54 | Salem (East) |
| TN55 | Pudukottai |
| TN56 | Perundurai |
| TN57 | Dindigul |
| TN58 | Madurai (South) |
| TN59 | Madurai (North) |
| TN60 | Theni |
| TN61 | Ariyalur |
| TN63 | Sivaganga |
| TN64 | Madurai (Central) |
| TN65 | Ramanathapuram |
| TN66 | Coimbatore (Central) |
| TN67 | Virudhunagar |
| TN68 | Kumbakonam |
| TN69 | Thoothukudi |
| TN70 | Hosur |
| TN72 | Tirunelveli |
| TN73 | Ranipet |
| TN74 | Nagercoil |
| TN75 | Marthandam |
| TN76 | Tenkasi |
| TN77 | Attur |
| TN78 | Dharapuram |
| TN79 | Sankarankovil |
| TN81 | Tiruchirapalli (East) |
| TN82 | Mayiladuthurai |
| TN83 | Vaniyambadi |
| TN84 | Srivilliputhur |
| TN85 | Kundrathur |
| TN86 | Erode (West) |
| TN87 | Sriperumbudur |
| TN88 | Namakkal (South) |
| TN90 | Salem (South) |
| TN91 | Chidambaram |
| TN92 | Thiruchendur |
| TN93 | Mettur |
| TN94 | Palani |
| TN95 | Sivakasi |
| TN96 | Kovilpatti |
| TN97 | Arani |
| TN99 | Coimbatore (West) |
Sources: tnsta.gov.in · tnsta.gov.in (2)
Related
Frequently asked questions
How many RTO codes does Tamil Nadu have?
Tamil Nadu has 88 RTO codes on the TN series, and the table above lists each one with the office that issued it. New codes are added whenever the state carves out a new transport office.
Which letters do Tamil Nadu number plates start with?
Tamil Nadu registrations start with TN, followed by the two-digit office number — TN01 is the Chennai (Central): Ayanavaram office.
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