Indian Overseas Bank is in Follwing Districts in West Bengal State

24 Parganas
Bankura
Barddhaman
Birbhum
Burdwan
Dakshin Dinajpur
Darjiling
East Midnapore
Haora
Hooghly
Hugli
Jalpaiguri
Koch Bihar
Kolkata
Malda
Maldah
Medinipur
Midnapore
Murshidabad
Nadia
North 24 Parganas
Purba Medinipur
Puruliya
South 24 Parganas
Thiruvarur
Uttar Dinajpur
West Dinajpur