Check here the complete updated list of depot code list of TNSTC.
Tamil Nadu State Transport Corporation Depot List
| Adyar Region Bus Depot List | ||
| District | TN Bus Depot | Depot Code |
| Chennai | Adyar | AD |
| Chennai | Mandaveli | MN |
| Chennai | Adambakkam | AB |
| Thiruvanmiyur Region Bus Depot List | ||
| District | TN Bus Depot | Depot Code |
| Chennai | Thiruvanmiyur | TR |
| Chennai | Kannagi Nagar | KA |
| Chennai | Alandur | AL |
| Chengalpattu | Perumbakkam | PA |
| Thyagaraya Nagar Region Bus Depot List | ||
| District | TN Bus Depot | Depot Code |
| Chennai | Chromepet | CR |
| Chennai | Tambaram | TA |
| Chennai | Chromepet-2 | CW |
| Vadapalani Region Bus Depot List | ||
| District | TN Bus Depot | Depot Code |
| Chennai | Iyyappanthangal | IY |
| Chennai | Vadapalani | VP |
| Tiruvallur | Poonamallee | PM |
| Ayanavaram Region Bus Depot List | ||
| District | TN Bus Depot | Depot Code |
| Chennai | Central Depot | CD |
| Chennai | Ayanavaram | AY |
| Chennai | Perambur | PR |
| Anna Nagar Region Bus Depot List | ||
| District | TN Bus Depot | Depot Code |
| Chennai | Anna Nagar | AN |
| Chennai | Ambattur | AM |
| Thiruvallur | Avadi | AV |
| Tondiarpet-1 Region Bus Depot List | ||
| District | TN Bus Depot | Depot Code |
| Chennai | Tondiarpet-1 | TD |
| Chennai | Tondiarpet-2 | TW |
| Thiruvallur | Thiruvottiyur | TV |
| Thiruvallur | Ennore | EN |
| Madhavaram Region Bus Depot List | ||
| District | TN Bus Depot | Depot Code |
| Chennai | Basin Bridge | BB |
| Chennai | Vyasarpadi | VY |
| Chennai | Madhavaram | MV |
| Thiruvallur | Padiyanallur | PL |