Indian Overseas Bank is in Follwing Cities in Nagapattinam District

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Ayakkaranpulam
Enangudi
Kankalancheri
Kilvelur
Kuttalam
Manalmedu
Mayuram(mayiladuthurai)
Nagapatinam
Nagapattinam
Nagore
Sankaran Pandal
Sembanarkoil
Sikkal
Sirkali
Thirukalachery
Thirumallaivasal
Thiruvaduthurai
Thopputhurai
Vadagarai
Vaitheeswarankoil
Vanagiri
Vedaranyam
Velanganni
Vilundamavadi