Bihar is an Indian state located in the northern part of the country. It is India's 13th biggest state by area and the 3rd largest by Population. Bihar has a population of 103,804,637 people. The most populated cities in Bihar are: 1. Patna The capital city of the state is also its most populous city. Patna hosted a population of 2,046,652 in 2011. Patna is one of the world’s oldest