Indian Overseas Bank is in Follwing Districts in West Bengal State

Alipur Duar
Andal
Asansol
Bagdogra
Balurghat
Banarhat
Bankura
Baranagar
Barasat
Barrackpur
Baruipur
Basirhat
Birbhum
Bishnupur
Bolpur
Bural
Burda
Burdwan
Chandannagar
Chaulkhola
Contai
Dankuni
Darjiling
Dhupguri
Domjur
Dum Dum
Durgapur
Ganganagar
Gopalpur
Habra
Haldia
Haldibari
Haora
Haringhata Hat
Howrah
Hugli
Hugli - Chinsurah
Jagatballavpur
Jalpaiguri
Jhargram
Jiaganj Azimgan
Joka
Kalchini
Kalimpong
Kalyani
Kanchrapara
Kanki
Kankurgachi
Karandighi
Katwa
Kharagpur
Kolkata
Krishna Nagar
Krishnaganj
Krishnagar
Kurseong
Lava
Madhyamgram
Malda
Mayapur
Medinipur
Memari
Murshidabad
Nabadwip
Narendrapur
Nowda
Palsanda
Pandua
Phulbagan
Puruliya
Raghunathganj
Raiganj
Rajarhat - Gopalpur
Rajganj
Rajpur Sonarpur
Ro Kolkata Ii
Sabdar Nagar
Sahid Matangini
Serampore
Sikri, Teh.Berhampore
Siliguri
Singur
Suri
Thandalai
Uluberia