Purnia

Purnia, also romanized and officially known as Purnea, is described as the fourth largest city of Bihar, India, and is the administrative headquarters of both Purnia district and Purnia division. It lies about 315 kilometres from Patna, 171 kilometres from Siliguri and 450 kilometres from Kolkata. The city covers 92 square kilometres, an area the article says is exceeded only by Patna among Bihar cities, and it gives a density of 3,058 people per square kilometre. At the 2011 census the Purnia Municipal Corporation had 282,248 residents. Its humid climate and the highest rainfall in Bihar have earned it the nickname Mini Darjeeling, and the Indian Army, the Indian Air Force and several central armed police forces keep bases around the district.