Introduction
Capital of West Bengal, India "Calcutta" redirects here. For other uses, see Calcutta (disambiguation) and Kolkata (disambiguation). Megacity in West Bengal, IndiaKolkata Kōlkātā (Bengali)CalcuttaMegacityKolkata skyline with CBD on left and Kolkata maidan on rightDurga Puja in KolkataHigh rises across EM BypassVintage tramsScience City KolkataJorasanko Thakur BariBirla Planetarium and The 42Eden Gardens during a matchHowrah Bridge EmblemNicknames: City of Joy, City of Castles, Gateway of Eastern India, Cultural Capital of IndiaInteractive map of KolkataKolkataLocation in West BengalShow map of West BengalKolkataLocation in IndiaShow map of IndiaKolkataLocation in AsiaShow map of AsiaCoordinates: 22°34′03″N 88°22′12″E / 22.5675°N 88.37°E / 22.5675; 88.37Country IndiaStateWest BengalDivisionPresidencyDistrictKolkataGovernment • TypeMunicipal Corporation • BodyKolkata Municipal Corporation • MayorVacant • Deputy MayorAtin Ghosh • SheriffGautam Ghose • Police commissionerAjay Kumar NandArea • Megacity206.08 km2 (79.57 sq mi) • Metro1,886.67 km2 (728.45 sq mi)Elevation9 m (30 ft)Population • Megacity2011 census: 4,496,694 2025 estimate: 6,577,000 • Density30,000/km2 (78,000/sq mi) • Metro2011 census: 14,112,536 (metro) 14,617,882 (Extended UA) 2025 estimate: 20,534,000 (metro) • City rank7th in India • Metro rank3rd in India2nd in Bengal region14th in Asia9th in the worldLanguages • OfficialBengali • EnglishTime zoneUTC+05:30 (IST)PIN700 xxxTelephone code+91 33Vehicle registrationWB-01 to WB-10Metro GDP (PPP) $224 billion HDI0.780 (High)International airportsNetaji Subhas Chandra Bose International Airport (CCU)TransitRapid Transit: Kolkata MetroCommuter rail: Kolkata Suburban Railway Other(s): West Bengal Transport CorporationMetropolitan region authorityKolkata Metropolitan Development AuthorityUN/LOCODEIN CCUWebsitekmcgov.inUNESCO World Heritage SiteOfficial nameDurga Puja in KolkataTypeCulturalDesignated2021 (16th Committee of UNESCO for safeguarding of the Intangible Cultural Heritage)Reference no.RegionSouthern AsiaNotabilityFirst in Asia under "Intangible Cultural Heritage of Humanity" category Ramsar WetlandOfficial nameEast Kolkata WetlandsTypeWetlands of International ImportanceDesignated19 August 2002 Kolkata, also known as Calcutta (its official name until 2001), is the capital and largest city of the Indian state of West Bengal. It lies on the eastern bank of the Hooghly River, 80 km (50 mi) west of the border with Bangladesh. It is the primary financial and commercial centre of eastern India and one of the gateways to northeastern India. Kolkata is the seventh most populous city in India with an estimated city proper population of 4.5 million while its metropolitan region Kolkata Metropolitan Area is the third most populous metropolitan region of India with a metro population of over 15 million. Kolkata is regarded by many sources as the cultural capital of India and a historically and culturally significant city in the historic region of Bengal. The three villages that predated Calcutta were ruled by the Nawab of Bengal under Mughal suzerainty. After the Nawab granted the East India Company a trading license in 1690, the area was developed by the Company into Fort William. Nawab Siraj ud-Daulah occupied the fort in 1756 but was defeated at the Battle of Plassey in 1757, after his general Mir Jafar mutinied in support of the company, and was later made the Nawab for a brief time. Under company and later crown rule, Calcutta served as the de facto capital of India until 1911. Calcutta was the second largest city in the British Empire, after London, and was the centre of bureaucracy, politics, law, education, science and the arts in India. The city was associated with many of the figures and movements of the Bengali Renaissance. It was the hotbed of the Indian nationalist movement. The partition of Bengal in 1947 affected the fortunes of the city. Following independence in 1947, Kolkata, which was once the premier centre of Indian commerce, culture, and politics, suffered many decades of political violence and economic stagnation before it rebounded. In the late 20th century, the city hosted the government-in-exile of Bangladesh during the Bangladesh Liberation War in 1971. It was also flooded with Hindu refugees from East Bengal (present-day Bangladesh) in the decades following the 1947 partition of India, transforming its landscape and shaping its politics. The city was overtaken by Mumbai (formerly Bombay) as India's largest city. A demographically diverse city, the culture of Kolkata features idiosyncrasies that include distinctively close-knit neighbourhoods (paras) and freestyle conversations (adda). Kolkata's architecture includes many imperial landmarks, including the Victoria Memorial, Howrah Bridge and the Grand Hotel. The city's heritage includes India's only Chinatown and remnants of Jewish, Armenian, Greek and Anglo-Indian communities. The city is closely linked with Bhadralok culture and the Zamindars of Bengal, including Bengali Hindu, Bengali Muslim and tribal aristocrats. The city is often regarded as India's cultural capital. Kolkata is home to institutions of national importance, including the Academy of Fine Arts, the Asiatic Society, the Indian Museum and the National Library of India. The University of Calcutta, first modern university in south Asia and its affiliated colleges produced many leading figures of South Asia. It is the centre of the Indian Bengali film industry, which is known as Tollywood. Among scientific institutions, Kolkata hosts the Geological Survey of India, the Botanical Survey of India, the Calcutta Mathematical Society, the Indian Science Congress Association, the Zoological Survey of India, the Horticultural Society, the Institution of Engineers, the Anthropological Survey of India and the Indian Public Health Association. The Port of Kolkata is India's oldest operating port. Four Nobel laureates and two Nobel Memorial Prize winners are associated with the city. Though home to major cricketing venues and franchises, Kolkata stands out in India for being the country's centre of association football. Kolkata is known for its grand celebrations of the Hindu festival of Durga Puja, which is recognized by UNESCO for its importance to world heritage. Kolkata is also known as the ''City of Joy''.