IDBI Bank is in Follwing Districts in Tamil Nadu State

Chennai
Coimbatore
Coimbotore
Cuddalore
Dharmapuri
Dindigul
Erode
Kancheepuram
Kanchipuram
Kanyakumari
Karur
Krishnagiri
Madurai
Nagapattinam
Namakkal
Nilgiris
Perambalur
Pudukkottai
Pudukottai
Ramanathapuram
Ranipet
Salem
Sivaganga
Thanjavur
Theni
Thiruvallur
Thiruvananthapuram
Thiruvarur
Tiruchiorappalli
Tiruchirapalli
Tirunelvali
Tirunelveli
Tirupur
Tiruvallur
Tiruvannamalai
Toothukudi
Vellore
Villupuram
Virudhunagar