Patna is the capital and largest city of the state of Bihar in India. Patna is the second-largest city in Eastern India after Kolkata. It had an estimated city population of 1.68 million in 2011, making it the 19th largest city in India. With over 2 million people, its urban agglomeration is the 18th largest in India. Patna also serves as the seat of Patna High Court.One of the oldest continuously inhabited places in the world, Patna was founded in 490 BCE by the king of Magadha.