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Kolkata formerly known as Calcutta is the capital of West Bengal, India. As per the 2011 census, Kolkata is the seventh-most populous city in India. Kolkata Metropolitan Area is the third-most populous metropolitan area in India. The estimated population of the Kolkata Metropolitan Area in 2023 is 1.60 crore.
As per the provisional data of the 2011 census, Kolkata City had a population of 44,96,694 (44.96 lakh) and the Estimated Population of Kolkata City in 2026 is 60 lakh (6 million)
Census 2011 Details
The initial provisional data released by Census India 2011, shows that the density of Kolkata for 2011 is 22000 people per sq. km. Kolkata city administers an area is 206 sq. km.
| Kolkata City | Census 2011 | 2026 Estimates |
| Total Population | 44,96,694 (44.96 lakh) | 60 lakh |
| Male Population | 2,356,766 | 31 lakh |
| Female Population | 2,139,928 | 29 lakh |
| Demography | 2011 |
| Population Density | 22000 per sq. km. |
| Average Literacy (%) | 86.31% |
| % of Male Literates | 88.34% |
| % of Female Literates | 84.06% |
| Sex Ratio | 908 |
| Child Sex Ratio | 933 |
| Children (0-6 years) | 3,39,323 |
Source: Census 2011
Kolkata Metropolitan Area Population
Kolkata Metropolitan Area is the urban agglomeration of the city of Kolkata. It’s the third-most populous metropolitan area / Urban Agglomeration in India after Delhi and Mumbai. The area covers 4 municipal corporations & 37 municipalities. Kolkata, North 24 Parganas, South 24 Parganas, Nadia, Howrah & Hooghly districts are part of the Kolkata Metropolitan Area
As per the provisional data of the 2011 census, Kolkata Metropolitan Area had a population of 1,40,35,959 (1.40 Crore). The estimated population of the Kolkata Metropolitan Area in 2026 is 1.60 crore
Sources: Census 2011
Religion in Kolkata City
Hinduism is the majority religion in Kolkata city with 76.51 % of the population following Hinduism. Islam is the second most popular religion in the city of Kolkata with approximately 20.60 % following it. Next comes Christianity at 0.88 %, Jainism at 0.47 %, Sikhism at 0.31 %, and Buddhism at 0.11 %. Around 0.03 % stated ‘Other Religion’, and approximately 1.09 % stated ‘No Particular Religion’.
Religion percentage in Kolkata
| Religion | Percentage |
| Hindu | 76.51 % |
| Muslims | 20.60 % |
| Christian | 0.88% |
| Jain | 0.47% |
| Sikh | 0.31% |
| Buddhist | 0.11% |
| Others | 0.03% |
| Not Stated | 1.09% |
Kolkata Historical Population
| Census Year | Population | Percentage Change |
| 1901 | 1,009,853 | – |
| 1911 | 1,117,966 | 10.70% |
| 1921 | 1,158,497 | 3.60% |
| 1931 | 1,289,461 | 11.30% |
| 1941 | 2,352,399 | 82.40% |
| 1951 | 2,956,475 | 25.70% |
| 1961 | 3,351,250 | 13.40% |
| 1971 | 3,727,020 | 11.20% |
| 1981 | 4,126,846 | 10.70% |
| 1991 | 4,399,819 | 6.60% |
| 2001 | 4,572,876 | 3.90% |
| 2011 | 4,496,694 | −1.7% |
| 2021 estimate | 4,750,000 | 5.60% |
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