Kolkata -- or Calcutta in English -- is the capital of the Indian state of West Bengal and located on the Hooghly river. Kolkata is the commercial and educational center of East India and one of the oldest operating ports in the country. In 2014, it had an estimated population of 4.6 million, which made it the 7th most populous city in India.
Kolkata has an estimated population of 4.6 million. The largest urban area that includes the suburbs has a population of more than 14.3 million, which makes it India's 3rd most populous metropolitan area.