List of Districts Indian Overseas Bank is avilable in Tamil Nadu at Nagapattinam
AkkurAyakkaranpulamAzhiyurDistrict CourtElathankudiEnangudiKaveripoompattinamKiliyanurKollidamKuttalamManalmeduMayiladuthuraiMayiladuthurai JunctionNagapattinamNagoreNidurPakkam KotturPoonthottamPoraiyarPunganurSankaranpandalSikkalSirkaliSme-mayiladuthurai-srinivasapuramTherezhundurThirukalacheryThirumullaivasalThiruvaduthuraiThopputhuraiThulasiyapattinamTittacherryVaitheeswaran KoilVelanganniVilundamavadai