The city of Purnia in the Indian state of Bihar also functions as the administrative headquarters of both the Purnia district and the Purnia division. It is located in the Kosi- Seemanchal area of Bihar. Purnia hosts several military bases such as Indian Air Force, Indian Army, three branches of Indias Central Armed Police Forces, the Border Security Force, the Sashastra Seema Bal and the Indo-Tibetan Border Police. The name of the city may have originated from the Sanskrit word Purna?Aranya, which means complete jungle. Purnia has a large forest cover and is located in the Mithila region of the state. The city lies on the alluvial tract of the Gangetic Plain and numerous rivers flow through the area that are mostly the tributaries of River Koshi. The city experience a favorable climate and is often referred to as "Mini Darjeeling." There are around 3 lakh residents in Purnia. Maithili, Angika, Hindi, Urdu, Bengali as well as English are the commonly spoken languages in this area. Purnia has an agricultural economy. The fertile soil supports paddy cultivation. Crops like potatoes, wheat, khesari, chickpeas, lentils, barley, sugarcane, tobacco, chili peppers, maize, makhana, mung beans and jute are also cultivated in the area. There are several poultries and fisheries in Purnia. This rapidly developing city is equipped with all modern amenities and many educational institutions.
In 2000, Indian Overseas Bank engaged in an initial public offering (IPO) that brought the governments share in the banks equity down to 75%. In 2001, the IOB acquired the Mumbai-based Adarsha Janata Sahakari Bank. Then in 2009, the bank took over Shree Suvarna Sahakari Bank, which was founded in 1969 and had its head office in Pune. Since 2006, Shree Suvarna Sahakari Bank had been in administration. It had nine offices in Pune, 2 in Mumbai and 1 in Shirpur. The total strength of employees was estimated to be more than 100. On 29 August 2003, the Indian Overseas Bank has opened an extension counter at New Kathiresan Temple complex, Bambalapitiya, Ceylon. The IOB opened a representative office in Guangzhou, China in 2005 followed which the bank opened another representative office in Kuala Lumpur and 2009 in Dubai, UAE. In the new millennium, international expansion started once again. The bank took over Bharat Overseas Bank in 2007. After three years, Malaysia granted a commercial banking license to a local bank jointly owned by BOB, IOB, and the Andhra Bank. The new bank named, India International Bank ( IIB Malaysia), began its business in 2012 in Kuala Lumpur and had a large population of Indians. The Andhra Bank holds 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 opened an offshore banking unit in Colombo, Sri Lanka. The bank also converted its existing Extension Counter at Ceylon into a full-fledged branch.