Kolkata district is an administrative district of West Bengal. The city of Kolkata is headquarters of the district.
According to the 2011 census of India, Kolkata district has a population of 4,486,679.[1]This gives it a ranking of 35th in India (out of a total of 640).[1] The district has a population density of 24,252 inhabitants per square kilometre (62,810/sq mi).[1]