First, Select Bank Name then select State then select District and then finally select branch to find all the details.
There are 766 distric available in india
India's largest district is Kachchh district of Gujarat
It is Available in Anakkavoor, Annur, Arakonam, Arani, Ariyalur, Aruppukottai, Attur, Avalappampatti, Avinashi, Bangalore, Bodinayakkanur, Boomikuppam  , Chengai Anna, Chennai, Chetput, Chettiarpatti, Chettikulam, Chidambaram, Coimbatore, Coimbtore, Coonoor, Cuddalore, Delhi, Devasthanam, Dharmapuri, Dindigul, Edappadi, Erode, Gobichettipalayam, Gopalapuram, Gudalur, Gurgaon, Hosur, Hulical  , Jaffrabad, K V Kuppam, K.paramathy, Kadiapattanam, Kanchipuram, Kangeyam, Kanyakumari, Karaikal, Karaikudi, Karur, Keerambur, Kodaikanal, Kolathur, Krishnagiri, Kumbakonam, Madurai, Mallagunta, Mallasamudram, Maravamangalam, Markampatti, Marthandam, Mayiladuthurai, Melamathur, Melur  , Modaiyur, Moolapalayam, Nadukaveri, Nagapattinam, Nagercoil, Namakkal, Nambuthalai, Nannilam, Neelambur, Negamum, Padalur, Palani, Palayampatti, Pallapatti, Pallikonda, Pandalgudi, Panruti, Paramagudi, Paruthipalli, Pattukottai, Perambalur, Perundurai, Pollachi, Pudukkottai, Pudukotta, Pudukottai, Pudupalayam, Rajapalayam, Ramanathapuram, Rameswaram, Ranipet, Salem, Sayalgudi, Seelanaickenpatti, Seithur, Sivagangai, Sivakasi, South Arcot, Sriperumbudur, Sulur, Tambaram, Tenkasi, Thakkolam, Thanjavur, Theni, Thirochitrambalam, Thiruchengode, Thirukkarugavur, Thoothukudi, Thummanatty, Tindivanam, Tiruchengode, Tiruchipalli, Tiruchirapalli, Tiruchirappalli, Tirunagar, Tirunelvali, Tirunelveli, Tirupattur, Tirupur, Tiruvallur, Tiruvannamalai, Tiruvannammalai, Tiruvarur  , Toothukudi, Tuticorin, Udayanadu, Udumalaipettai, Uthagamandalam, Uthamapuram, Vadakarai, Vadakkipalayam, Vadugapatti, Vadugunthangal, Valapadi, Valikandapuram, Valparai, Veerapandi, Veerappan Chatram, Vellore, Vettaikaranpudur, Vijayamangalam, Vilacheri, Virudhunagar, Watrap, district.
Union Bank Of India is in 143 districts of Tamil Nadu