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.
The government owns 63.44% of the share capital of Union Bank of India making it one of the largest government-owned bank. As on 30 September 2015, the Union Bank had a network of 6909 ATMs. The online telebanking facility of UBI is available to all the Core Banking Customers, either individual or corporate. UBI had 4214 branches, as of September 2016. Out of them, four bank branches are outside India in Hong Kong, Antwerp, and Sydney (Australia) Dubai International Financial Centre. The representative offices of UBI are at Abu Dhabi, Shanghai, Beijing. The Union Bank of India (Union Bank) was registered as a limited company in Mumbai on 11 November 1919, and Mahatma Gandhi inaugrated it. The Union Bank of India had only four branches - three in Mumbai and one in Saurashtra at the time of Independence in 1947. After Independence, the growth of UBI was accelerated, and the Indian Government nationalized it in 1969. It had 240 branches by that time. The Union Bank of India acquired Belgaum Bank shortly after nationalization. The UBI bought the Miraj State Bank in 1985. In 1999 the Union Bank was requested by the RBI to acquire Sikkim Bank in a rescue after extensive irregularities had been discovered at the non-scheduled bank.