The city of Tirunelveli, a major city in the South Indian state of Tamil Nadu, is also known by the name Nellai. it was known as Tinnevelly during the British era. It is an ancient city which is about 2000 years old and it is a town of ancient tradition and culture. River Thamirabarani flows through this city. It is an educational hub with many schools and colleges such as Anna University Regional Campus, Tirunelveli Medical College, Tirunelveli Law College, the Tirunelveli Veterinary College and Research Institution, etc. Tirunelveli has around a million residents employed in the service-sectors pertaining to administration, agro-machinery, agricultural trading, tourism, banking, information technology and educational services. The city has beedi and cement factories, workshops for steel-based products, tobacco companies, mills for cotton textiles, spinning and weaving units, etc. There are several small-scale industries like tanneries and brick kilns. Agriculture, as well as the handloom industry, also contribute to the economic growth of the city. The city is very well-connected to the rest of the state and the country via road and railways. There are a number of historical monuments at Tirunelveli - the Swami Nellaiappar Temple being the most famous one.
In 1964 the head office of Indian Overseas Bank was inaugurated at Mount Road. The Indian Overseas Bank has been the first public sector bank to introduce mobile banking services using Wireless Application Protocol(WAP). On 29 August 2003, the Indian Overseas Bank has opened an extension counter at Bambalapitiya, Ceylon. In 2005, the IOB began a representative office in Guangzhou; China followed which the bank opened another representative office in Kuala Lumpur and Dubai, UAE. In 2007 The bank took over Bharat Overseas Bank. After three years, Malaysia granted a commercial banking license to a local bank jointly owned by Bank Of Baroda, Indian Overseas Bank, and the Andhra Bank. The new bank named, India International Bank (IIB Malaysia), began its operations in 2012 in Kuala Lumpur and had a large population of Indians. The Andhra Bank has a 25% stake in its joint-venture, BOB owns 40%, and remaining 35% is with IOB. On 31 August 2013, the Indian Overseas Bank has incorporated an offshore banking unit in Colombo, Sri Lanka. The bank also converted its existing Extension Counter at Ceylon into a full-fledged branch. In 2014-15, the IOB bank has crossed the target of 3000 ATMs as on 2014.IOB also launched m passbook app as a new mobile banking initiative.