Chart and table of population level and growth rate for the Calcutta, India metro area from 1950 to 2025.

Census: Population: West Bengal: Kolkata: Male data was reported at 7,319,682.000 Person in 03-01-2011. This records an increase from the previous number of 7,064,138.000 Person for 03-01-2001. Census: Population: West Bengal: Kolkata: Male data is updated decadal, averaging 3,271,172.000 Person from Mar 1901 (Median) to 03-01-2011, with 12 observations. The data reached an all-time high of 7,319,682.000 Person in 03-01-2011 and a record low of 951,485.000 Person in 03-01-1901. Census: Population: West Bengal: Kolkata: Male data remains active status in CEIC and is reported by Office of the Registrar General & Census Commissioner, India. The data is categorized under India Premium Database’s Demographic – Table IN.GAC037: Census: Population: By Towns and Urban Agglomerations: West Bengal.

Delhi was the largest city in terms of number of inhabitants in India in 2023.The capital city was estimated to house nearly 33 million people, with Mumbai ranking second that year. India's population estimate was 1.4 billion, ahead of China that same year.

In 2024, the population of Bengaluru was estimated to be 14 million, an increase of about two percent from the previous year's estimates. The southern Indian city, capital of Karnataka, is the 4th most populous in the country, after Delhi, Mumbai, and Kolkata.

The number of workers across the western state of West Bengal in India during financial year 2023 was over half million workers. This was an increase from the previous year. The south Asian country of India had over 14 million workers in financial year 2023.

The estimated per capita income across the eastern state of West Bengal in India stood at around 154 thousand Indian rupees in the financial year 2024. There was a consistent increase in the income per capita in the state since the financial year 2012 till 2020. Sikkim recorded the highest per capita income the country.