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Chennai, also known as Madras ( its official name until 1996), is the
capital Capital and its variations may refer to: Common uses * Capital city, a municipality of primary status ** Capital region, a metropolitan region containing the capital ** List of national capitals * Capital letter, an upper-case letter Econom ...
and
largest Large means of great size. Large may also refer to: Mathematics * Arbitrarily large, a phrase in mathematics * Large cardinal, a property of certain transfinite numbers * Large category, a category with a proper class of objects and morphisms (or ...
city of
Tamil Nadu Tamil Nadu (; , TN) is the southernmost States and union territories of India, state of India. The List of states and union territories of India by area, tenth largest Indian state by area and the List of states and union territories of Indi ...
, the southernmost state of India. It is located on the
Coromandel Coast The Coromandel Coast is a coastal region along the southeastern front of the Indian peninsula. Its delimitations are numerous, but generally admitted to be bounded by the Krishna River, Krishna river River mouth, mouth to the north, the Bay of B ...
of the
Bay of Bengal The Bay of Bengal is the northeastern part of the Indian Ocean. Geographically it is positioned between the Indian subcontinent and the Mainland Southeast Asia, Indochinese peninsula, located below the Bengal region. Many South Asian and Southe ...
. According to the 2011 Indian census, Chennai is the sixth-most-populous city in India and forms the fourth-most-populous urban agglomeration. Incorporated in 1688, the
Greater Chennai Corporation Greater Chennai Corporation (GCC) is a local government for the City of Chennai in the Chennai Metropolitan Area of Tamil Nadu, India. Inaugurated on 29 September 1688, under a royal charter issued by James II of England, King James II of Eng ...
is the oldest
municipal corporation Municipal corporation is the legal term for a local governing body, including (but not necessarily limited to) cities, counties, towns, townships, charter townships, villages, and boroughs. The term can also be used to describe municipally o ...
in India and the second oldest in the world after
London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
. Historically, the region was part of the
Chola The Chola Empire, which is often referred to as the Imperial Cholas, was a medieval thalassocratic empire based in southern India that was ruled by the Chola dynasty, and comprised overseas dominions, protectorates and spheres of influence ...
,
Pandya The Pandya dynasty (), also referred to as the Pandyas of Madurai, was an ancient Tamil dynasty of South India, and among the four great kingdoms of Tamilakam, the other three being the Pallavas, the Cholas and the Cheras. Existing sinc ...
,
Pallava The Pallava dynasty existed from 275 CE to 897 CE, ruling a significant portion of South India, the Deccan, also known as Tondaimandalam. The Pallavas played a crucial role in shaping in particular southern Indian history and heritage. The ...
and
Vijayanagara Vijayanagara () is a city located in Vijayanagara district of Karnataka state in India.Vijayanagara
kingdoms during various eras. The coastal land which then contained the fishing village Madrasapattinam, was purchased by the
British East India Company The East India Company (EIC) was an English, and later British, joint-stock company that was founded in 1600 and dissolved in 1874. It was formed to Indian Ocean trade, trade in the Indian Ocean region, initially with the East Indies (South A ...
from the Nayak ruler Chennapa Nayaka in the 17th century. The British garrison established the Madras city and
port A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Hamburg, Manch ...
and built
Fort St. George Fort St. George (or historically, White Town) is a fortress at the coastal city of Chennai, India. Founded in 1639, it was the first English (later British) fortress in India. The construction of the fort provided the impetus for further ...
, the first British fortress in India. The city was made the winter capital of the
Madras Presidency The Madras Presidency or Madras Province, officially called the Presidency of Fort St. George until 1937, was an administrative subdivision (province) of British India and later the Dominion of India. At its greatest extent, the presidency i ...
, a colonial province of the
British Raj The British Raj ( ; from Hindustani language, Hindustani , 'reign', 'rule' or 'government') was the colonial rule of the British The Crown, Crown on the Indian subcontinent, * * lasting from 1858 to 1947. * * It is also called Crown rule ...
in the
Indian subcontinent The Indian subcontinent is a physiographic region of Asia below the Himalayas which projects into the Indian Ocean between the Bay of Bengal to the east and the Arabian Sea to the west. It is now divided between Bangladesh, India, and Pakista ...
. After India gained independence in 1947, Madras continued as the capital city of the
Madras State Madras State was a state in the Indian Republic, which was in existence during the mid-20th century as a successor to the Madras Presidency of British India. The state came into existence on 26 January 1950 when the Constitution of India was ad ...
and present-day Tamil Nadu. The city was officially renamed as Chennai in 1996. The city is coterminous with
Chennai district Chennai District, formerly known as Madras district, is one of the 38 districts in the state of Tamil Nadu, India. It is the smallest and the most densely populated district in the state. The district is almost coterminous with the city of C ...
, which together with the adjoining suburbs constitutes the Chennai Metropolitan Area, the 35th-largest urban area in the world by population and one of the largest metropolitan economies of India. Chennai has the fifth-largest urban economy and the third-largest
expatriate An expatriate (often shortened to expat) is a person who resides outside their native country. The term often refers to a professional, skilled worker, or student from an affluent country. However, it may also refer to retirees, artists and ...
population in India. Known as the gateway to South India, Chennai is amongst the most-visited Indian cities by international tourists and was ranked 36th among the most-visited cities in the world in 2019 by
Euromonitor Euromonitor International Ltd is a London-based market research company founded in 1972. The firm is well regarded, and its research database has been described as the "Cadillac of industry information sources", but subscriptions have been descr ...
. Ranked as a beta-level city in the Global Cities Index, it was ranked as the second-safest city in India by
National Crime Records Bureau The National Crime Records Bureau (NCRB) is an Indian government agency responsible for collecting and analyzing crime data, as defined by the Indian Penal Code (IPC) and Special and Local Laws (SLL). NCRB is headquartered in New Delhi and is ...
in 2023. Chennai is a major centre for
medical tourism Medical tourism is the practice of traveling abroad to obtain medical treatment. In the past, this usually referred to those who traveled from less-developed countries to major medical centers in highly developed countries for treatment unavaila ...
and is termed "India's health capital". Chennai houses a major portion of India's automobile industry, hence the name "
Detroit Detroit ( , ) is the List of municipalities in Michigan, most populous city in the U.S. state of Michigan. It is situated on the bank of the Detroit River across from Windsor, Ontario. It had a population of 639,111 at the 2020 United State ...
of India". It was the only South Asian city to be ranked among
National Geographic ''National Geographic'' (formerly ''The National Geographic Magazine'', sometimes branded as ''Nat Geo'') is an American monthly magazine published by National Geographic Partners. The magazine was founded in 1888 as a scholarly journal, nine ...
's "Top 10 food cities" in 2015 and ranked ninth on
Lonely Planet Lonely Planet is a travel guide book publisher. Founded in Australia in 1973, the company has printed over 150 million books. History 20th century Lonely Planet was founded by married couple Maureen Wheeler, Maureen and Tony Wheeler. In 19 ...
's best cosmopolitan cities in the world. In October 2017, Chennai was added to the
UNESCO The United Nations Educational, Scientific and Cultural Organization (UNESCO ) is a List of specialized agencies of the United Nations, specialized agency of the United Nations (UN) with the aim of promoting world peace and International secur ...
Creative Cities Network (UCCN) list. It is a major
film production Filmmaking or film production is the process by which a Film, motion picture is produced. Filmmaking involves a number of complex and discrete stages, beginning with an initial story, idea, or commission. Production then continues through screen ...
centre and home to the Tamil-language film industry.


Etymology

The name ''Chennai'' was derived from the name of Chennappa Nayaka, a Nayak ruler who served as a general under Venkata Raya of the
Vijayanagara Empire The Vijayanagara Empire, also known as the Karnata Kingdom, was a late medieval Hinduism, Hindu empire that ruled much of southern India. It was established in 1336 by the brothers Harihara I and Bukka Raya I of the Sangama dynasty, belongi ...
from whom the British East India Company took the town in lease in 1639. The first official use of the name was in August 1639 in a sale deed to
Francis Day Francis Talbot Day (2 March 1829 – 10 July 1889) was an army surgeon and naturalist in the Madras Presidency who later became the Inspector-General of Fisheries in British Raj, India and British rule in Burma, Burma. A pioneer ichthyologist, ...
of the East India Company. A land grant was given to the
Chennakesava Perumal Temple Chennakesava Perumal Temple is a Hindu temple situated in the Peddanaickenpettah, George Town neighbourhood of Chennai city, Tamil Nadu, India. It is dedicated to Chenna Kesava Perumal. There is the nearby Chenna Malleeswarar Temple. They a ...
in Chennapatanam later in 1646, which some scholars argue to be the first use of the name. The name ''Madras'' is of native origin, and has been shown to have been in use before the British established a presence in India. A Vijayanagara-era inscription found in 2015 was dated to the year 1367 and mentions the port of Mādarasanpattanam, along with other small ports on the east coast, and it was theorized that the aforementioned port is the fishing port of
Royapuram Royapuram is a locality in the northern part of the city of Chennai, Tamil Nadu, India. It is best known for its beach, and for Royapuram Railway Station. The station is the first railway station of South India, opening in 1856, and is today ...
. ''Madras'' might have been derived from Madraspattinam, a fishing village north of
Fort St. George Fort St. George (or historically, White Town) is a fortress at the coastal city of Chennai, India. Founded in 1639, it was the first English (later British) fortress in India. The construction of the fort provided the impetus for further ...
. In July 1996, the
Government of Tamil Nadu The Government of Tamil Nadu () is the administrative body responsible for the governance of the Indian state of Tamil Nadu. Chennai is the capital of the state and houses the state executive, legislature and head of judiciary. Under the Const ...
officially changed the name from Madras to Chennai. The name "Madras" continues to be used occasionally for the city as well as for places or things named after the city in the past.


History

Stone Age The Stone Age was a broad prehistory, prehistoric period during which Rock (geology), stone was widely used to make stone tools with an edge, a point, or a percussion surface. The period lasted for roughly 3.4 million years and ended b ...
implements have been found near Pallavaram in Chennai; according to the
Archaeological Survey of India The Archaeological Survey of India (ASI) is an Indian government agency that is responsible for archaeological research and the conservation and preservation of cultural historical monuments in the country. It was founded in 1861 by Alexander ...
(ASI), Pallavaram was a
megalith A megalith is a large stone that has been used to construct a prehistoric structure or monument, either alone or together with other stones. More than 35,000 megalithic structures have been identified across Europe, ranging geographically f ...
ic cultural establishment, and pre-historic communities resided in the settlement. The region around Chennai was an important administrative, military, and economic centre for many centuries. During the 1st century CE, a
Tamil Tamil may refer to: People, culture and language * Tamils, an ethno-linguistic group native to India, Sri Lanka, and some other parts of Asia **Sri Lankan Tamils, Tamil people native to Sri Lanka ** Myanmar or Burmese Tamils, Tamil people of Ind ...
poet named
Thiruvalluvar Thiruvalluvar commonly known as Valluvar, was a Tamil poet and philosopher. He is best known as the author of the '' Tirukkuṟaḷ'', a collection of couplets on ethics, political and economic matters, and love. The text is considered an e ...
lived in the town of
Mylapore Mylapore (also spelt Mayilapur), or Thirumayilai, is a neighbourhood in the central part of the city of Chennai, India. It is one of the oldest residential parts of the city. The locality is claimed to be the birthplace of the celebrated Tamil ...
, a neighbourhood of present-day Chennai. The region was part of Tondaimandalam which was ruled by the
Early Cholas The Early Cholas were a Tamil kingdom of the Chola dynasty - pre and post Sangam period (600 BCE–300 CE). It was one of the three main kingdoms of Tamilakam. Their early capitals were Urayur or Tiruchirapalli and Kaveripattinam. Along wit ...
in the 2nd century CE by subduing
Kurumba Kurumba may refer to: * Kurumbas (tribe), an indigenous community in the Indian states of Karnataka, Kerala and Tamil Nadu * Kurumba languages, spoken by the Kurumbas * Kurumba Gounder, a caste of Tamil Nadu, India * Kurumba, Panchthar, village in ...
, the original inhabitants of the region.
Pallavas The Pallava dynasty existed from 275 CE to 897 CE, ruling a significant portion of the Deccan, also known as Tondaimandalam. The Pallavas played a crucial role in shaping in particular southern Indian history and heritage. The dynasty ros ...
of
Kanchi Kanchipuram (IAST: '; ), also known as Kanjeevaram, is a stand alone city corporation, satellite nodal city of Chennai in the Indian state of Tamil Nadu in the Tondaimandalam region, from Chennaithe capital of Tamil Nadu. Known as the ''Ci ...
became independent rulers of the region from 3rd to 9th century CE, and the areas of
Mahabalipuram Mamallapuram (also known as Mahabalipuram), is a town in Chengalpattu district in the southeastern Indian States and territories of India, state of Tamil Nadu, best known for the UNESCO World Heritage Site of 7th- and 8th-century Hindu Group of ...
and Pallavaram were built during the reign of
Mahendravarman I Mahendravarman I (600–630 CE) was a Pallava emperor who ruled over realm covering the southern portions of present-day Andhra region and northern regions of what forms present-day Tamil Nadu in India, in the early 7th century. He was a schol ...
. In 879, Pallavas were defeated by the
Later Cholas The Chola Empire, which is often referred to as the Imperial Cholas, was a medieval thalassocratic empire based in southern India that was ruled by the Chola dynasty, and comprised overseas dominions, protectorates and spheres of influence ...
led by
Aditya I Aditya Chola I, the son of Vijayalaya Chola, was the Chola king who laid the foundation of the Chola Empire with the conquest of the Pallava Kingdom and the occupation of the Western Ganga Kingdom and Kongu Nadu. Aditya Chola I was succee ...
, and
Jatavarman Sundara Pandyan Jatavarman Sundara I, also known as Sadayavarman Sundara Pandyan, was an emperor of the Pandyan dynasty who ruled regions of Tamilakam (present day South India), Northern Sri Lanka, and Southern Andhra between 1250–1268 CE.Sethuraman, p124 H ...
later brought the region under the
Pandya The Pandya dynasty (), also referred to as the Pandyas of Madurai, was an ancient Tamil dynasty of South India, and among the four great kingdoms of Tamilakam, the other three being the Pallavas, the Cholas and the Cheras. Existing sinc ...
rule in 1264. The region came under the influence of
Vijayanagara Empire The Vijayanagara Empire, also known as the Karnata Kingdom, was a late medieval Hinduism, Hindu empire that ruled much of southern India. It was established in 1336 by the brothers Harihara I and Bukka Raya I of the Sangama dynasty, belongi ...
in the 15th century CE. The Portuguese arrived in 1522 and built a port named São Tomé after the Christian apostle St. Thomas, who is believed to have preached in the area between 52 and 70 CE. In 1612, the
Dutch Dutch or Nederlands commonly refers to: * Something of, from, or related to the Netherlands ** Dutch people as an ethnic group () ** Dutch nationality law, history and regulations of Dutch citizenship () ** Dutch language () * In specific terms, i ...
established themselves near
Pulicat Pulicat or Pazhaverkadu is a historic seashore town in Chennai Metropolitan Area at Thiruvallur District, of Tamil Nadu states and territories of India, state, India. It is about north of Chennai and from Elavur, on the southern periphery of ...
, north of Chennai. On 20 August 1639, Francis Day of the
British East India Company The East India Company (EIC) was an English, and later British, joint-stock company that was founded in 1600 and dissolved in 1874. It was formed to Indian Ocean trade, trade in the Indian Ocean region, initially with the East Indies (South A ...
, along with the Nayak of Kalahasti Chennappa Nayaka, met with the Vijayanager Emperor
Peda Venkata Raya Venkata III (born Pedda Venkata Raya; reigned 1632 – 10 October 1642) was the grandson of Aliya Rama Raya. Venkata III belonged to a Telugu people, Telugu family. and became the King of the Vijayanagara Empire from 1632 to 1642. His son-i ...
at
Chandragiri Chandragiri is a suburb and outgrowth of Tirupati and located in Tirupati district of the Indian state of Andhra Pradesh. It is a part of Tirupati urban agglomeration and a major growing residential area in Tirupati It is the mandal headquarter ...
and obtained a grant for land on the Coromandel coast on which the company could build a factory and warehouse for their trading activities. On 22 August, he secured the grant for a strip of land about long and inland in return for a yearly sum of five hundred
lakh A lakh (; abbreviated L; sometimes written lac) is a unit in the Indian numbering system equal to one hundred thousand (100,000; scientific notation: 105). In the Indian 2, 2, 3 convention of digit grouping, it is written as 1,00,000. F ...
pagodas A pagoda is a tiered tower with multiple eaves common to Thailand, Cambodia, Nepal, India, China, Japan, Korea, Myanmar, Vietnam, and other parts of Asia. Most pagodas were built to have a religious function, most often Buddhist, but sometime ...
. The region was then formerly a fishing village known as "Madraspatnam". A year later, the company built
Fort St. George Fort St. George (or historically, White Town) is a fortress at the coastal city of Chennai, India. Founded in 1639, it was the first English (later British) fortress in India. The construction of the fort provided the impetus for further ...
, the first major English settlement in India, which became the nucleus of the growing colonial city and urban Chennai. In 1746, Fort St. George and the town were captured by the French under General La Bourdonnais, the Governor of
Mauritius Mauritius, officially the Republic of Mauritius, is an island country in the Indian Ocean, about off the southeastern coast of East Africa, east of Madagascar. It includes the main island (also called Mauritius), as well as Rodrigues, Ag ...
, who plundered the town and its outlying villages. The British regained control in 1749 through the Treaty of Aix-la-Chapelle and strengthened the town's fortress wall to withstand further attacks from the French and
Hyder Ali Hyder Ali (''Haidar'alī''; ; 1720 – 7 December 1782) was the Sultan and ''de facto'' ruler of the Kingdom of Mysore in southern India. Born as Hyder Ali, he distinguished himself as a soldier, eventually drawing the attention of Mysore's ...
, the king of Mysore. They resisted a French siege attempt in 1759. In 1769, the city was threatened by Hyder Ali during the
First Anglo-Mysore War The First Anglo-Mysore War (1767–1769) was a conflict in Mughal India, India between the Sultanate of Mysore and the East India Company. The war was instigated in part by the machinations of Nizam Ali Khan, Asaf Jah II, Asaf Jah II, the Niz ...
with the Treaty of Madras ending the conflict. By the 18th century, the British had conquered most of the region and established the
Madras Presidency The Madras Presidency or Madras Province, officially called the Presidency of Fort St. George until 1937, was an administrative subdivision (province) of British India and later the Dominion of India. At its greatest extent, the presidency i ...
with Madras as the capital. The city became a major naval base and became the central administrative centre for the British in South India. The city was the baseline for the Great Trigonometrical Survey of India, which was started on 10 April 1802. With the advent of railways in India in the 19th century, the city was connected to other major cities such as
Bombay Mumbai ( ; ), also known as Bombay ( ; its official name until 1995), is the capital city of the Indian States and union territories of India, state of Maharashtra. Mumbai is the financial centre, financial capital and the list of cities i ...
and
Calcutta Kolkata, also known as Calcutta (List of renamed places in India#West Bengal, its official name until 2001), is the capital and largest city of the Indian States and union territories of India, state of West Bengal. It lies on the eastern ba ...
, promoting increased communication and trade with the
hinterland Hinterland is a German word meaning the 'land behind' a city, a port, or similar. Its use in English was first documented by the geographer George Chisholm in his ''Handbook of Commercial Geography'' (1888). Originally the term was associated wi ...
. After India gained its independence in 1947, the city became the capital of
Madras State Madras State was a state in the Indian Republic, which was in existence during the mid-20th century as a successor to the Madras Presidency of British India. The state came into existence on 26 January 1950 when the Constitution of India was ad ...
, the predecessor of the current state of Tamil Nadu. The city was the location of the hunger strike and death of
Potti Sreeramulu Potti Sreeramulu (IAST: Poṭṭi Śrīrāmulu, ; 16 March 1901 – 16 December 1952) was an Indian freedom fighter known for his pivotal role in the creation of Andhra State. Revered as "Amarajeevi" ("Immortal Being"), he is remembered for h ...
, which resulted in the formation of
Andhra State Andhra State (IAST: ; ), created in 1953, was the official name of the State of Andhra Pradesh until 1956. The state was formed from Telugu-speaking districts of the erstwhile Madras State, which form two distinct cultural regions – Rayalas ...
in 1953 and eventually the re-organization of Indian states based on linguistic boundaries in 1956. In 1965, agitations against the
imposition of Hindi Hindi imposition is a form of linguistic imperialism in which the use of Modern Standard Hindi is preferred in Indian states that do not use or desire to use Hindi as a regional language. The term is rooted in the anti-Hindi agitations of Tamil ...
and in support of continuing English as a medium of communication arose which marked a major shift in the political dynamics of the city and eventually led to English being retained as an official language of India alongside Hindi. On 17 July 1996, the city was officially renamed from Madras to Chennai, in line with then a nationwide trend to using less Anglicised names. On 26 December 2004, a
tsunami A tsunami ( ; from , ) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and underwater explosions (including detonations, ...
lashed the shores of Chennai, killing 206 people in Chennai and permanently altering the coastline. The 2015 Chennai Floods submerged major portions of the city, killing 269 people and resulting in damages of .


Environment


Geography

Chennai is located on the southeastern coast of India in the northeastern part of Tamil Nadu on a flat coastal plain known as the
Eastern Coastal Plains The Eastern Coastal Plains is a stretch of landmass lying between the eastern part of the Deccan plateau and the Bay of Bengal in India. The plains stretch from the Mahanadi delta to Kaniyakumari at the southern tip of the Indian peninsula with ...
with an average elevation of and highest point at . Chennai's soil is mostly
clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolinite, ). Most pure clay minerals are white or light-coloured, but natural clays show a variety of colours from impuriti ...
,
shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of Clay mineral, clay minerals (hydrous aluminium phyllosilicates, e.g., Kaolinite, kaolin, aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4) and tiny f ...
and
sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...
. Clay underlies most of the city with sandy areas found along the river banks and coasts where rainwater runoff percolates quickly through the soil. Certain areas in South Chennai have a hard rock surface. As of 2018, the city had a green cover of 14.9 per cent, with a per capita green cover of 8.5 square metres against the
World Health Organization The World Health Organization (WHO) is a list of specialized agencies of the United Nations, specialized agency of the United Nations which coordinates responses to international public health issues and emergencies. It is headquartered in Gen ...
recommendation of nine square metres. , water bodies cover an estimated area of the city. Two major rivers flow through Chennai, the Cooum River (or ''Koovam'') through the centre and the
Adyar River The Adyar River, which originates near the Chembarambakkam Lake in the Kanchipuram district, is one of the three rivers that winds through Chennai, Tamil Nadu, India, and joins the Bay of Bengal at the Adyar estuary. The long river contributes ...
to the south. A section of the
Buckingham Canal The Buckingham Canal is a -long fresh water navigation canal, that parallels the Coromandel Coast of South India from Kakinada of Andhra Pradesh to Parangipettai near Chidambaram of Tamil Nadu. The canal connects most of the natural backw ...
built in 1877–78, runs parallel to the Bay of Bengal coast, linking the two rivers. Kosasthalaiyar River traverses through the northern fringes of the city before draining into the Bay of Bengal, at Ennore Creek. The Otteri Nullah, an east–west stream, runs through north Chennai and meets the Buckingham Canal at Basin Bridge. The groundwater table in Chennai is at below ground level on average and is replenished mainly by rainwater. Of the coastline of the city, experiences erosion, with sand accretion along the shoreline at the
Marina beach Marina Beach, or simply the Marina, is a natural urban beach in Chennai, Tamil Nadu, India, along the Bay of Bengal. The beach runs from near Fort St. George in the north to Foreshore Estate in the south, a distance of , making it the second longest ...
and the area between the Ennore Port and Kosasthalaiyar river.


Geology

Chennai is situated in Seismic Zone III, indicating a moderate risk of damage from
earthquakes An earthquakealso called a quake, tremor, or tembloris the shaking of the Earth's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they c ...
. Owing to the tectonic zone the city falls in, the city is considered a potential
geothermal energy Geothermal energy is thermal energy extracted from the crust (geology), crust. It combines energy from the formation of the planet and from radioactive decay. Geothermal energy has been exploited as a source of heat and/or electric power for m ...
site. The crust has old granite rocks dating back nearly a billion years indicating volcanic activities in the past with expected temperatures of at depth.


Climate

Under the
Köppen climate classification The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (te ...
, Chennai has the dry-summer version of a
tropical savanna climate Tropical savanna climate or tropical wet and dry climate is a tropical climate sub-type that corresponds to the Köppen climate classification categories ''Aw'' (for a dry "winter") and ''As'' (for a dry "summer"). The driest month has less than ...
(''As''), closely bordering the dry-winter version (''Aw'') due to a February average rainfall of . The city lies on the
thermal equator The thermal equator (also known as "the heat equator") is a belt encircling Earth, defined by the set of locations having the highest mean annual temperature at each longitude around the globe. Because local temperatures are sensitive to the geo ...
and as it is also located on the coast, there is no extreme variation in seasonal temperature. The hottest time of the year is from April to June with an average temperature of . The highest recorded temperature was on 31 May 2003. The coldest time of the year is in DecemberJanuary, with average temperature of and the lowest recorded temperature of on 11 December 1895 and 29 January 1905. Chennai receives most of its rainfall from the
northeast monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscill ...
between October and December while smaller amounts of rain also come from the
southwest monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscil ...
between June and September. The dry season is between January and May, with March having the least average rainfall at . The average annual rainfall is about . The highest annual rainfall recorded was in 2005. Prevailing winds in Chennai are usually southwesterly between April and October and northeasterly during the rest of the year. The city relies on the annual monsoon rains to replenish water reservoirs. Cyclones and depressions are common features during the season. Water inundation and flooding happen in low-lying areas during the season with significant flooding in
2015 2015 was designated by the United Nations as: * International Year of Light * International Year of Soil __TOC__ Events January * January 1 – Lithuania officially adopts the euro as its currency, replacing the litas, and becomes ...
and
2023 Catastrophic natural disasters in 2023 included the Lists of 21st-century earthquakes, 5th-deadliest earthquake of the 21st century 2023 Turkey–Syria earthquakes, striking Turkey and Syria, leaving up to 62,000 people dead; Cyclone Freddy ...
.


Flora and fauna

A protected
estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime enviro ...
on the Adyar River forms a natural habitat for several species of birds and animals. Chennai is also a popular city for birding with more than 130 recorded species of birds have been recorded in the city. Marshy wetlands such as
Pallikaranai Pallikaranai is a neighborhood and a residential area in south Chennai, Tamil Nadu, India. Located in proximity to the IT industry in Old Mahabalipuram Road, Chennai's central business districts and the automobile hub in GST road has attracted ...
and inland lakes also host a number of migratory birds during the monsoon and winter. The southern stretch of Chennai's coast from Tiruvanmiyur to Neelangarai are favoured by the endangered
olive ridley sea turtle The olive ridley sea turtle (''Lepidochelys olivacea''), also known commonly as the Pacific ridley sea turtle, is a species of turtle in the family Cheloniidae. The species is the second-smallest and most abundant of all sea turtles found in t ...
s to lay eggs every winter.
Guindy National Park Guindy National Park is a Protected areas of Tamil Nadu, protected area, located in Chennai, India. Spread across , it is one of the smallest National parks of India, National Parks in India and one of the few national parks situated inside a me ...
is a protected area within the city limits and wildlife conservation and research activities take place at
Arignar Anna Zoological Park Arignar Anna Zoological Park also known as the Vandalur Zoo, is a zoological garden in Chennai, India. It is located at Vandalur in the south western part of the city, about from the city center. It is spread over an area of and is amongst th ...
.
Madras Crocodile Bank Trust The Madras Crocodile Bank Trust and Centre for Herpetology (MCBT) is a reptile zoo and herpetology research station, located south of the city of Chennai, Tamil Nadu, India. The centre is both a registered trust and a recognized zoo under the ...
is a herpetology research station, located south of Chennai. The city's tree cover is estimated to be around with 121 recorded species belonging to 94 genera and 42 families. Major species include Copper pod, Indian beech, Gulmohar, Samanea saman, Raintree, Neem, and Tropical Almond. The city's marine and inland water bodies house a number of fresh water and salt water fishes, and marine organisms.


Environmental issues

Chennai had many lakes spread across the city, but urbanization has led to the shrinkage of water bodies and wetlands. The water bodies have shrunk from an estimated in 1893 to in 2017. The number of wetlands in the city has decreased from 650 in 1970 to 27 in 2015. Nearly half of the native plant species in the city's wetlands have disappeared with only 25 per cent of the erstwhile area covered with aquatic plants still viable. The major water bodies including the Adyar, Cooum and Kosathaliyar rivers, and the Buckingham canal are heavily polluted with effluents and waste from domestic and commercial sources. The encroachment of urban development on wetlands has hampered the sustainability of water bodies and was a major contributor to the floods in 2015 and
2023 Catastrophic natural disasters in 2023 included the Lists of 21st-century earthquakes, 5th-deadliest earthquake of the 21st century 2023 Turkey–Syria earthquakes, striking Turkey and Syria, leaving up to 62,000 people dead; Cyclone Freddy ...
and 2019 Chennai water crisis, water scarcity crisis in 2019. The Chennai River Restoration Trust set up by the government of Tamil Nadu is working on the restoration of the Adyar River. The Environmentalist Foundation of India is a volunteering group working towards wildlife conservation and habitat restoration.


Demographics

A resident of Chennai is called a ''Chennaite''. According to 2011 Census of India, 2011 census, the city had a population of 4,646,732, within an area of . Post expansion of the city to , the Chennai Municipal Corporation was renamed as
Greater Chennai Corporation Greater Chennai Corporation (GCC) is a local government for the City of Chennai in the Chennai Metropolitan Area of Tamil Nadu, India. Inaugurated on 29 September 1688, under a royal charter issued by James II of England, King James II of Eng ...
and the population including the new city limits as per the 2011 census was 6,748,026. , 40 per cent of the 1.788 million families in the city live below the poverty line. , the city had 2.2 million households, with 40 per cent of the residents not owning a house. There are about 1,131 slums in Chennai, slums in the city housing more than 300,000 households.


Administration and politics


Administration

The city is governed by the Greater Chennai Corporation (formerly "Corporation of Madras"), which was established on 29 September 1688. It is the oldest surviving
municipal corporation Municipal corporation is the legal term for a local governing body, including (but not necessarily limited to) cities, counties, towns, townships, charter townships, villages, and boroughs. The term can also be used to describe municipally o ...
in India and the second oldest surviving corporation in the world. In 2011, the jurisdiction of the Chennai Corporation was expanded from to an area of , divided into three regions North, South and Central covering List of Chennai Corporation wards, 200 wards. The corporation is headed by a Mayor of Chennai, mayor, elected by the councillors, who are elected through a popular vote by the residents. The Chennai Metropolitan Development Authority (CMDA) is the nodal agency responsible for the planning and development of the Chennai Metropolitan Area, which is spread over an area of , covering the
Chennai district Chennai District, formerly known as Madras district, is one of the 38 districts in the state of Tamil Nadu, India. It is the smallest and the most densely populated district in the state. The district is almost coterminous with the city of C ...
and parts of Tiruvallur district, Tiruvallur, Kanchipuram district, Kanchipuram and Chengalpattu district, Chengalpattu districts. The metropolitan area consists of four
municipal corporation Municipal corporation is the legal term for a local governing body, including (but not necessarily limited to) cities, counties, towns, townships, charter townships, villages, and boroughs. The term can also be used to describe municipally o ...
s, 12 municipalities and other smaller Panchayati Raj, panchayats. As the capital of the state of Tamil Nadu, the city houses the state executive and legislature, legislative headquarters primarily in the secretariat buildings in Fort St George. Madras High Court is the highest judicial authority in the state, whose jurisdiction extends across Tamil Nadu and Puducherry (union territory), Puducherry.


Law and order

The Greater Chennai Police (GCP) is the primary law enforcement agency in the city and is headed by a police commissioner, commissioner of police. The Greater Chennai Police is a division of the Tamil Nadu Police, the administrative control of which lies with the Department of Home, Prohibition and Excise, Home ministry of the Government of Tamil Nadu. Chennai City Traffic Police, Greater Chennai Traffic Police (GCTP) is responsible for the traffic management in the city. The metropolitan suburbs are policed by the Chennai Metropolitan Police, headed by the Chennai Police Commissionerate, and the outer district areas of the CMDA are policed by respective police departments of Tiruvallur, Kanchipuram, Chengalpattu and Ranipet districts. , Greater Chennai had 135 police stations across four zones with 20,000 police personnel. , the crime rate in the city was 101.2 per hundred thousand people. It was ranked as the second most safest city in India by
National Crime Records Bureau The National Crime Records Bureau (NCRB) is an Indian government agency responsible for collecting and analyzing crime data, as defined by the Indian Penal Code (IPC) and Special and Local Laws (SLL). NCRB is headquartered in New Delhi and is ...
in 2023. In 2009, Madras Central Prison, the major prison and one of the oldest in India was demolished with the prisoners moved to the newly constructed Puzhal Central Prison.


Politics

While the major part of the city falls under three Parliament of India, parliamentary constituencies (Chennai North (Lok Sabha constituency), Chennai North, Chennai Central (Lok Sabha constituency), Chennai Central and Chennai South (Lok Sabha constituency), Chennai South), the Chennai metropolitan area is spread across five constituencies. It elects 28 Member of the Legislative Assembly (India), MLAs to the state legislature. Being the capital of the Madras Province that covered a large area of the Deccan Plateau, Deccan region, Chennai remained the centre of politics during the British colonial era. Chennai is the birthplace of the idea of the Indian National Congress, which was founded by the members of the Theosophical Society movement based on the idea conceived in a private meeting after a Theosophical convention held in the city in December 1884. The city has hosted yearly conferences of the Congress seven times, playing a major part in the Indian independence movement. Chennai is also the birthplace of regional political parties such as the South Indian Welfare Association in 1916 which later became the Justice Party (India), Justice Party and Dravidar Kazhagam. Politics is characterized by a mix of regional and national political parties. During the 1920s and 1930s, the Self-Respect Movement, spearheaded by Theagaroya Chetty and E. V. Ramaswamy emerged in Madras. Congress dominated the political scene post Independence in the 1950s and 1960s under C. Rajagopalachari and later K. Kamaraj. The Anti-Hindi agitations led to the rise of Dravidian parties with Dravida Munnetra Kazhagam (DMK) forming the first government under C. N. Annadurai in 1967. In 1972, a split in the DMK resulted in the formation of the All India Anna Dravida Munnetra Kazhagam (AIADMK) led by M. G. Ramachandran. The two Dravidian parties continue to dominate electoral politics, the national parties usually aligning as junior partners to the two major Dravidian parties. Many film personalities became politicians and later chief ministers, including C. N. Annadurai, M. Karunanidhi, M. G. Ramachandran, Janaki Ramachandran and Jayalalithaa.


Culture


Languages

Tamil Tamil may refer to: People, culture and language * Tamils, an ethno-linguistic group native to India, Sri Lanka, and some other parts of Asia **Sri Lankan Tamils, Tamil people native to Sri Lanka ** Myanmar or Burmese Tamils, Tamil people of Ind ...
 is the language spoken by most of Chennai's population; Indian English, English is largely spoken by white-collar workers. As per the 2011 census,
Tamil Tamil may refer to: People, culture and language * Tamils, an ethno-linguistic group native to India, Sri Lanka, and some other parts of Asia **Sri Lankan Tamils, Tamil people native to Sri Lanka ** Myanmar or Burmese Tamils, Tamil people of Ind ...
is the most spoken language with 3,640,389 (78.3%) of speakers followed by Telugu language, Telugu (432,295), Urdu (198,505), Hindi (159,474) and Malayalam (104,994). Madras Bashai is a Variety (linguistics), variety of the Tamil spoken by people in the city. It originated with words introduced from other languages such as English language, English and Telugu on the Tamil originally spoken by the native people of the city. Korean language, Korean, Japanese Language, Japanese, French language, French, Mandarin Chinese, German language, German and Spanish Language, Spanish are spoken by foreign expatriates residing in the city.


Religion and ethnicity

Chennai is home to a diverse population of ethno-religious communities. As per census of 2011, Chennai's population was majority Hindu (80.73%) with 9.45% Muslim, 7.72% Christians, Christian, 1.27% others and 0.83% with no religion or not indicating any religious preference. Tamil people, Tamils form majority of the population with minorities including Telugu people, Telugus, Marwaris, Gujarati people, Gujaratis, Parsis, Sindhi people, Sindhis, Odia people, Odias, Goans, Kannadigas, Anglo-Indians, Bengali people, Bengalis, Punjabi people, Punjabis, and Malayalees. The city also has a significant expatriate population. , out of the 2,937,000 migrants in the city, 61.5% were from other parts of the state, 33.8% were from rest of India and 3.7% were from outside the country.


Architecture

With the history of Chennai dating back centuries, the architecture of Chennai ranges in a wide chronology. The oldest buildings in the city date from the 6th to 8th centuries CE, which include the Kapaleeshwarar Temple in
Mylapore Mylapore (also spelt Mayilapur), or Thirumayilai, is a neighbourhood in the central part of the city of Chennai, India. It is one of the oldest residential parts of the city. The locality is claimed to be the birthplace of the celebrated Tamil ...
and the Parthasarathy Temple in Triplicane, built in the Dravidian architecture encompassing various styles developed during the reigns of different empires. In Dravidian architecture, the Hindu temples consisted of large mantapas with gate-pyramids called ''gopurams'' in quadrangular enclosures that surround the temple. The Gopuram, a monumental tower usually ornate at the entrance of the temple forms a prominent feature of Koils and whose origins can be traced back to the Pallava art and architecture, Pallavas who built the group of monuments in Group of Monuments at Mahabalipuram, Mamallapuram. The associated ''Agraharam'' architecture, which consists of traditional row houses can still be seen in the areas surrounding the temples. Chennai has the second highest number of heritage buildings in the country. With the Mugal Empire, Mugals influence in mediaeval times and the British Empire, British later, the city saw a rise in a blend of Hindu, Islamic and Gothic revival styles, resulting in the distinct Indo-Saracenic architecture. The architecture for several institutions followed the Indo-Saracenic style with the Chepauk Palace designed by Paul Benfield amongst the first Indo-Saracenic buildings in India. Other buildings in the city from the era designed in this style of architecture include
Fort St. George Fort St. George (or historically, White Town) is a fortress at the coastal city of Chennai, India. Founded in 1639, it was the first English (later British) fortress in India. The construction of the fort provided the impetus for further ...
(1640), Amir Mahal (1798), Government Museum, Chennai, Government Museum (1854), University of Madras#Senate House, Senate House of the University of Madras (1879), Victoria Public Hall (1886), Madras High Court (1892), Bharat Insurance Building (1897), Ripon Building (1913), College of Engineering, Guindy, College of Engineering (1920) and Southern Railway headquarters, Chennai, Southern Railway headquarters (1921). Gothic revival-style buildings include the Chennai Central and Chennai Egmore railway stations. The Santhome Church, which was originally built by the Portuguese in 1523 and is believed to house the remains of the Apostles in the New Testament, apostle Thomas the Apostle, St. Thomas, was rebuilt in 1893, in neo-Gothic style. By the early 20th century, the art deco made its entry upon the city's urban landscape with buildings in George Town, Chennai, George Town including the United India building (presently housing Life Insurance Corporation of India, LIC) and the Burma Shell building (presently the Chennai House), both built in the 1930s, and the Dare House built in 1940 examples of this architecture. After Partition of India, Independence, the city witnessed a rise in Modernism, and the completion of the LIC Building in 1959, the tallest building in the country at that time, marked the transition from lime-and-brick construction to concrete columns. The presence of the Doppler weather radar, weather radar at the Chennai Port prohibited the construction of buildings taller than 60 m around a radius of 10 km till 2009. This resulted in the central business district expanding horizontally, unlike other metropolitan cities, while the peripheral regions began experiencing vertical growth with the construction of taller buildings with the tallest building at .


Arts

Chennai is a major centre for music, art and dance in India. The city is called the Cultural Capital of South India. Madras Music Season, initiated by Madras Music Academy in 1927, is celebrated every year during the month of December and features performances of traditional Carnatic music by artists from the city. Madras University introduced a course of music, as part of the Bachelor of Arts curriculum in 1930. Gaana, a combination of various folk music, is sung mainly in the working-class area of North Chennai. Chennai Sangamam, an art festival showcasing various arts of South India is held every year. Chennai has been featured in UNESCO Creative Cities Network list since October 2017 for its old musical tradition. Chennai has a diverse theatre scene and is a prominent centre for Bharata Natyam, a classical dance form that originated in Tamil Nadu and the oldest dance form in India. Cultural centres in the city include Kalakshetra and Government Music College. Chennai is also home to some choirs, who during the Christmas season stage various carol performances across the city in Tamil and English. Chennai is home to many museums, galleries, and other institutions that engage in arts research and are major tourist attractions. Established in the early 18th century, the Government Museum, Chennai, Government Museum and the National Art Gallery, Chennai, National Art Gallery are amongst the oldest in the country. The museum inside the premises of Fort St. George maintains a collection of objects of the British era. The museum is managed by the
Archaeological Survey of India The Archaeological Survey of India (ASI) is an Indian government agency that is responsible for archaeological research and the conservation and preservation of cultural historical monuments in the country. It was founded in 1861 by Alexander ...
and has in its possession, the first Flag of India hoisted at Fort St. George, India, Fort St George after the declaration of India's Independence on Independence Day (India), 15 August 1947. Chennai is the base for Tamil cinema, nicknamed Kollywood, alluding to the neighbourhood of Kodambakkam where several film studios are located. The history of cinema in South India started in 1897 when a European exhibitor first screened a selection of silent short films at the Victoria Public Hall in the city. Swamikannu Vincent purchased a Movie projector, film projector and erected tents for screening films which became popular in the early 20th century. Keechaka Vadham, the first film in South India, was produced in the city and released in 1917. Gemini Studios, Gemini and Vijaya Studios, Vijaya Vauhini studios, established in the 1940s, were amongst the largest and earliest in the country. Chennai hosts many major film studios, including AVM Productions, the oldest surviving studio in India.


Cuisine

Chennai cuisine is predominantly South Indian with rice as its base. Most local restaurants still retain their rural flavour, with many restaurants serving food over a banana leaf. Eating on a banana leaf is an old custom and imparts a unique flavour to the food and is considered healthy. Idly and Dosa (food), dosa are popular breakfast dishes. Chennai has an active street food culture and various cuisine options for dining including Indian cuisine, North Indian, Chinese cuisine, Chinese and Continental breakfast, continental. The influx of industries in the early 21st century also bought distinct cuisines from other countries such as Japanese cuisine, Japanese and Korean cuisine, Korean to the city. Chennai was the only South Asian city to be ranked among National Geographic's "Top 10 food cities" in 2015. Chennai was named as the most vegan friendly city in India in 2018.


Economy

The economy of Chennai consistently exceeded national average growth rates due to Economic reforms in India, reform-oriented economic policies in the 1970s. With the presence of two major ports, an international airport, and a converging road and rail networks, Chennai is often referred to as the "Gateway to South India". According to the Globalization and World Cities Research Network, Chennai is amongst the cities most integrated with the global economy, classified as a Global city, beta-city. , Chennai had an estimated GDP of $143.9 billion, ranking it among the List of cities by GDP, most productive metro areas in India. Chennai has a diversified industrial base anchored by different sectors including automobiles, software services, Electronic hardware, hardware, healthcare and financial services. , Chennai is amongst the top export districts in the country, with more than US$2563 billion in exports. The city has a permanent exhibition complex Chennai Trade Centre at Nandambakkam. The city hosts the Tamil Nadu Global Investors Meet, a business summit organized by the Government of Tamil Nadu. With about 62% of the population classified as affluent with less than 1% asset-poor, Chennai has the fifth highest number of millionaires. Chennai is among the major Software industry in Chennai, information technology (IT) hubs of India. Tidel Park, established in 2000, was amongst the first and largest IT parks in Asia. The presence of Special Economic Zone, SEZs and government policies have contributed to the growth of the sector, which has attracted foreign investments and job seekers from other parts of the country. In the 2020s, the city has become a major provider of Software as a service, SaaS and has been dubbed the "SaaS Capital of India". The automotive industry in Chennai accounts for more than 35% of India's overall automotive components and automobile output, earning the nickname "Detroit of India". A large number of automotive companies have their manufacturing bases in the city. Integral Coach Factory in Chennai manufactures railway coaches and other rolling stock for the Indian Railways. Ambattur Industrial Estate housing various manufacturing units is among the largest small-scale industrial estates in the country. Chennai contributes more than 50 per cent of India's leather exports. Chennai is a major electronics hardware exporter. The city was home to the now-defunct Madras Stock Exchange, India's third-largest by trading volume behind the Bombay Stock Exchange and the National Stock Exchange of India. Madras Bank, the first European-style banking system in India, was established on 21 June 1683 followed by first commercial banks such as Bank of Hindustan (1770) and General Bank of India (1786). Bank of Madras merged with two other presidency banks to form Imperial Bank of India in 1921 which in 1955 became the State Bank of India, the largest bank in India. Chennai is the headquarters of Banking in India, nationalized banks such as Indian Bank and Indian Overseas Bank. Chennai hosts the Reserve Bank of India, South Zonal Office, south zonal office of the Reserve Bank of India, the country's central bank, along with its zonal training centre and staff College, one of the two colleges run by the bank. The city also houses a World Bank office, Chennai, permanent back office of the World Bank. About 400 financial industry businesses are headquartered in the city. Defence Research and Development Organisation, DRDO, India's premier defence research agency, operates various facilities in Chennai. Heavy Vehicles Factory of the Armoured Vehicles Nigam Limited, AVANI, headquartered in Chennai, manufactures Armoured fighting vehicles, Main battle tanks, tank engines and armoured clothing for the use of the Indian Armed Forces. ISRO, the premier Indian space agency primarily responsible for performing tasks related to space exploration, operates research facilities in the city. As per
Euromonitor Euromonitor International Ltd is a London-based market research company founded in 1972. The firm is well regarded, and its research database has been described as the "Cadillac of industry information sources", but subscriptions have been descr ...
, Chennai is the fourth-most visited city in India by international tourists and 36th internationally in 2019. Medical tourism forms an important part of the city's economy, with more than 40% of total medical tourists visiting India making it to Chennai.


Infrastructure


Water supply

The city's water supply and sewage treatment are managed by the Chennai MetroWater Supply and Sewage Board. Water is drawn from Red Hills Lake and Chembarambakkam Lake, the major water reservoirs in the city and treated at water treatment plants located at Kilpauk, Puzhal, Chembarambakkam and supplied to the city through 27 water distribution stations. The city receives 530 million litres per day (mld) of water from Krishna River through Telugu Ganga project and 180 mld of water from the Veeranam lake project. 100 million litres of treated water per day is produced from the Minjur desalination plant, the country's largest seawater desalination plant. Chennai is predicted to face a deficit of 713 mld of water by 2026 as the demand is projected at 2,248 mld and supply estimated at 1,535 mld. The city's sewer system was designed in 1910, with some modifications in 1958.


Waste management

Chennai generates 4,500 tonnes of garbage every day, of which 429 tonnes are plastic waste. The Greater Chennai Corporation undertakes garbage collection and processing with collection in some of the wards contracted to private companies. , an average of 150 tonnes of garbage disposal is done in two landfill sites at Kodungaiyur and Pallikaranai daily. In market and business areas, the conservancy work is done during the night. , there are public toilets in 943 locations, managed by the city corporation.


Communication

Chennai is one of four Indian cities connected by Submarine communications cable, undersea fibre-optic cables and is the Cable landing point, landing point of SEA-ME-WE 4, SMW4 (connecting with Europe, Middle East and Southeast Asia), i2i and TIISCS, TIC (connecting with Singapore), Bay of Bengal Gateway, BBG (connecting with Middle East, Southeast Asia and Sri Lanka), Gulf Bridge International (connecting with Middle East), and BRICS Cable, BRICS (connecting with Brazil, Russia, China and South Africa) with long i2i having the world's largest design capacity of 8.4 terabits per second. , four mobile phone service companies operate GSM networks including Bharti Airtel, BSNL, Vodafone Idea and Reliance Jio offering 4G and 5G mobile services. Wireline and broadband services are offered by five major operators and other smaller local operators. Chennai is amongst the cities with a high internet usage and penetration. , the city had the highest average broadband speed among Indian cities, with a recorded download speed of 32.67 Mbit/s.


Power

Electricity distribution is done by the Tamil Nadu Electricity Board headquartered in Chennai. , the city consumes an average of 2,750 MW of power daily, which is above 18% of the total power consumption of 15,000 MW by the state of Tamil Nadu and ranks the second highest among all cities nationally. The city has over 248,000 streetlights maintained by the corporation. Major fossil fuel power plants in the city include North Chennai Thermal Power Station, GMR Vasavi Diesel Power Plant, Ennore Thermal Power Station, Basin Bridge Gas Turbine Power Station, Madras Atomic Power Station and Vallur Thermal Power Station, Vallur Thermal Power Project. Madras Atomic Power Station located at Kalpakkam about south of the city is a comprehensive nuclear power production, fuel Nuclear reprocessing, reprocessing, and Nuclear waste, waste treatment facility and is the first fully indigenous nuclear power station in India.


Health care

Chennai has a well-developed health infrastructure, including both government-run and private hospitals. The corporation runs 138 primary health centres, 14 secondary health centres, three maternity hospitals and three veterinary health centres. The corporation also runs six diagnostic centres, 37 shelters and 10 health centres for the homeless. The city attracts many health tourists from abroad and other states and has been termed as India's health capital. Major government run hospitals include Government General Hospital, Chennai, Government General Hospital, Government multi-super speciality hospital, Chennai, Government multi-super specialty hospital, Kilpauk Medical College, Kilpauk medical college hospital, Government Royapettah Hospital, Stanley Medical College, Stanley medical college hospital, Government Hospital of Thoracic Medicine, Chennai, Government hospital of thoracic medicine, Adyar Cancer Institute, Tambaram TB Sanatorium, TB Sanatorium and National Institute of Siddha. The Government General Hospital was started by 16 November 1664 and was the first major hospital in India. Major private hospitals in the city include Apollo Hospitals, Billroth Hospitals, Dr. Mehta's Hospital, Fortis Malar Hospital, Madras Medical Mission, Madras Institute of Orthopaedics and Traumatology, MIOT Hospitals, Sankara Nethralaya, SRM Medical College Hospital and Research Centre, Sri Ramachandra Medical College and Research Institute, Gleneagles Global Hospitals, Global Hospitals, Chettinad Group, Chettinad Hospitals, Kauvery Hospital and Vijaya Hospitals. Corporation is responsible for administration of polio vaccine for eligible age groups. King Institute of Preventive Medicine and Research established in 1899 is a research institute specializing in preventive medicine and vaccination.


Media

Newspaper publishing started in Chennai with the launch of the weekly ''The Madras Courier'' in 1785. It was followed by the weeklies ''The Madras Gazette'' and ''The Government Gazette'' in 1795. ''The Spectator'', founded in 1836 was the first English newspaper in Chennai to be owned by an Indian and became the city's first daily newspaper in 1853. The first Telugu journal printed from Madras was ''Satya Doota'' in 1835, and the first Tamil newspaper, ''Swadesamitran'', was launched in 1899. Chennai has several newspapers and magazines published in various languages including Tamil, English and Telugu. The major dailies with a circulation of more than 100,000 copies per day include ''The Hindu'', ''Dina Thanthi'', ''Dinakaran'', ''The Times of India'', ''Dina Malar'' and ''The Deccan Chronicle''. Several periodicals and local newspapers prevalent in select localities also bring out editions from the city. The government run Doordarshan broadcasts terrestrial and satellite television channels from its Chennai centre set up in 1974. Many private satellite television networks including Sun Network, one of India's largest broadcasting companies, are based in the city. The cable TV service is entirely controlled by the state government while Direct broadcast satellite, DTH and Internet Protocol television, IPTV is available via various private operators. Radio broadcasting began in 1924 by the Madras Presidency Radio Club. All India Radio was established in 1938. The city has four amplitude modulation, AM and 11 frequency modulation, FM radio stations operated by All India Radio, Hello FM, Suryan FM, Radio Mirchi, Radio City (Indian radio station), Radio City and BIG FM 92.7, BIG FM among others.


Others

Fire services are handled by the Tamil Nadu Fire and Rescue Services, which operates 33 operating fire stations. The corporation also owns 52 community halls across the city. Postal services are handled by India Post, which operates 568 post offices, of which nearly 460 operate from rented premises. The first post office was established on 1 June 1786 at Fort St. George on 1 June 1786.


Transport


Air

The aviation history of Chennai began in 1910, when Giacomo D'Angelis built the first powered flight in Asia and tested it in The Island, Chennai, Island Grounds. In 1915, Tata Sons, Tata Air Mail started an airmail service between Karachi and Madras marking the beginning of civil aviation in India. In March 1930, a discussion initiated by pilot G. Vlasto led to the founding of Madras Flying Club. On 15 October 1932, J. R. D. Tata flew a De Havilland Puss Moth, Puss Moth aircraft carrying air mail from Karachi to
Bombay Mumbai ( ; ), also known as Bombay ( ; its official name until 1995), is the capital city of the Indian States and union territories of India, state of Maharashtra. Mumbai is the financial centre, financial capital and the list of cities i ...
's Juhu aerodrome, Juhu Airstrip and the flight was continued to Madras piloted by aviator Nevill Vintcent marking the first scheduled commercial flight. The city is served by Chennai International Airport located in Tirusulam, around southwest of the city centre. It is the List of busiest airports in India, fourth-busiest airport in India in terms of passenger traffic and cargo handled. While the existing airport is undergoing expansion with an addition of , a new Chennai greenfield airport, Parandur, greenfield airport has been proposed to handle additional traffic. The region comes under the purview of the Southern Air Command, Indian Air Force, Southern Air Command of the Indian Air Force. The Air Force operates an air base at Tambaram Air Force Station, Tambaram. The Indian Navy operates airbases at INS Rajali, Arakkonam and Chennai.


Rail

The history of railway in Chennai began in 1832, when the first railway line in India was proposed between Chinnamalai, Little Mount and Chintadripet in the city which became operational in 1837. The Madras Railway was established later in 1845 and the construction on the first main line between Madras and Arcot started in 1853, which became operational in 1856. In 1944, all the railway companies operating in British India were taken over by the Government. In December 1950, the Central Advisory Committee for Railways approved the plan for Indian Railways into six zonal systems and the Southern Railway zone was created on 14 April 1951 by merging three state railways, namely, the Madras and Southern Mahratta Railway, the South Indian Railway Company, and the Mysore State Railway with Chennai as the Southern Railway headquarters, Chennai, headquarters. The city has four major railway terminals at Chennai Central railway station, Chennai Central, Chennai Egmore railway station, Egmore, Chennai Beach railway station, Beach and Tambaram railway station, Tambaram. Chennai Central, city's largest station provides access to other major stations nationally and is amongst the busiest stations in the country. ;Suburban and MRTS Chennai has a well-established suburban railway network operated by Southern railway, which was established in 1928. The Mass Rapid Transit System (Chennai), Mass Rapid Transit System (MRTS) is an elevated urban mass transit system established in 1995 operating on a single line from Chennai Beach railway station, Chennai Beach to Velachery railway station, Velachery. ;Metro Chennai Metro is a rapid transit rail system in Chennai that was opened in 2015. As of 2023, the metro system consists of two operational lines operating across with List of Chennai Metro stations, 41 stations. The Chennai metro system is being expanded with a proposed addition of three more lines and an extension of .


Road

Chennai has an extensive road network covering about as of 2023. Chennai is one of the termini of the Golden Quadrilateral system of National Highway (India), National Highways. As a part of the network, the city is connected to Mumbai and Kolkata via National Highway 48 (India), NH 48 and National Highway 16 (India), NH 16 respectively. In addition, National Highway 32 (India), NH 32, and National Highway 716 (India), NH 716 originate from the city. The road network also consists of State Highway (India), state highways which serve as arterial roads and two peripheral roads (Inner Ring Road, Chennai, inner and Outer Ring Road, Chennai, outer ring roads). There are grade separators and Flyovers in Chennai, flyovers at major intersections. There are two expressways under construction: Chennai Port–Maduravoyal Expressway and Bangalore–Chennai Expressway. , there are over six million registered vehicles in the city. public transport, Public bus transport is handled by the Metropolitan Transport Corporation (Chennai), Metropolitan Transport Corporation of Tamil Nadu State Transport Corporation, which is run by the Government of Tamil Nadu. It was established in 1947 when private buses operating in Madras presidency were nationalized by the government and runs about 3233 buses . State Express Transport Corporation (Tamil Nadu), State Express Transport Corporation Limited (SETC), established in 1980, runs long-distance express services exceeding 250 km and above and links the city with other important cities and adjoining states of Andhra Pradesh, Karnataka, Kerala and the Union Territory of Puducherry (union territory), Puducherry. SETC operates various classes of services such as semi-deluxe, ultra-deluxe and air-conditioned with advance booking and reservation on all of its routes. Chennai Mofussil Bus Terminus is one of the largest bus stations in Asia and caters to outstation buses. The other means of road transport in the city include vans, auto rickshaws, on-call metered taxis and tourist taxis.


Water

Chennai has two major ports Chennai Port, Chennai and Kamarajar Port Limited, Ennore which are managed by the Ministry of Ports, Shipping and Waterways (India), Ministry of Ports, Shipping and Waterways of the Government of India. There are three minor ports, which are managed by the Department of Highways and Minor Ports (Tamil Nadu), department of highways and minor ports of Government of Tamil Nadu. Royapuram fishing harbour is used by fishing boats. Indian Navy has a major base at Chennai.


Education

Chennai is a major educational hub and home to some of the premium educational institutions in the country. The city has a 90.33% literacy rate and ranks second among the major Indian metropolitan city centres. Chennai has a mix of public and private schools with the public school system managed by the school education department of Government of Tamil Nadu. , there are 420 List of schools in Chennai, public schools run by Greater Chennai Corporation. Public schools run by the Chennai Corporation are all affiliated with the Tamil Nadu Board of Secondary Education, Tamil Nadu State Board, while private schools may be affiliated with either of Tamil Nadu Board of Secondary Education, Central Board of Secondary Education (CBSE), Council for the Indian School Certificate Examinations (ICSE) or National Institute of Open Schooling (NIOS). School education starts with two years of Kindergarten from age three onwards and then follows the Indian Education in India, 10+2 plan, ten years of school and two years of higher secondary education. The University of Madras was founded in 1857 and is one of India's first modern universities. Colleges for science, arts, and commerce degrees are typically affiliated with the University of Madras, which has six campuses in the city. Indian Institute of Technology Madras is a premier institute of engineering and College of Engineering, Guindy, Anna University founded in 1794 is the oldest engineering college in India. Officers Training Academy of the Indian Army is headquartered in the city. There are eight government-run medical colleges in the city including one dental college, three for traditional medicine and four for modern medicine apart from multiple private colleges operating under the purview of Tamil Nadu Dr. M.G.R. Medical University in Chennai. Madras Medical College was established in 1835 and is one of the oldest medical colleges in India. Chennai has many libraries with the major ones being the Connemara Public Library ( 1896), one of the four National Depository Centres in India that receive a copy of all newspapers and books published in the country and the Anna Centenary Library, the largest library in Asia. Chennai has two Council of Scientific and Industrial Research, CSIR research institutions namely Central Leather Research Institute and Structural Engineering Research Centre. Chennai book fair is an annual book fair organized by the Booksellers and Publishers Association of South India (BAPASI) and is typically held in December–January.


Tourism and recreation

With temples, beaches and centres of historical and cultural significance including the UNESCO Heritage Site of Mahabalipuram, Chennai is one of the most-visited cities in India with 11 million domestic and 630,000 foreign tourists visiting in 2020. The gateway to the South India, southern part of India, Chennai was ranked among the top hundred destinations by
Euromonitor Euromonitor International Ltd is a London-based market research company founded in 1972. The firm is well regarded, and its research database has been described as the "Cadillac of industry information sources", but subscriptions have been descr ...
. , the city has about List of hotels in Chennai, 7,000 luxury rooms across four- and five-star categories, with 85 per cent of the room demand coming from business travellers. Chennai has a coastline with many beaches including the Marina Beach, Marina spanning which is the second-longest urban beach in the world and Elliot's Beach south of the Adyar delta. , Chennai has 835 public parks maintained by the corporation. The largest park is the 358-acre Tholkappia Poonga, developed to restore the fragile ecosystem of the Adyar estuary. Semmozhi Poonga is a botanical garden maintained by the horticulture department. Madras Crocodile Bank is a reptile zoo located south of the city and has one of the largest collections of reptiles in the country. Arignar Anna zoological park is a large urban zoo with more than two million visitors annually. Guindy National Park is a protected area within the city limits and has a children's park and a Chennai Snake Park Trust, snake park associated with it. Chennai also houses several theme parks and amusement parks. , there are 120 cinema screens and multiplexes. Stage plays and dramas of different genres and languages are enacted in theatres across the city. Chennai is also home to Shopping in Chennai, several malls. The city is an important market for jewellery. Anna Nagar and Nungambakkam are amongst the expensive retail zones in the country.


Sports

Cricket is the most popular sport in Chennai and was introduced in 1864 with the foundation of the Madras Cricket Club. The M.A. Chidambaram Stadium, established in 1916, is one of the oldest cricket stadiums in India and has hosted matches during multiple ICC Cricket World Cups. Other cricketing venues include Chemplast Cricket Ground and Guru Nanak College Ground. Prominent cricketers from the city include Srinivasaraghavan Venkataraghavan, S. Venkataraghavan, Kris Srikkanth, and Ravichandran Ashwin. Established in 1987, MRF Pace Foundation is a Bowling (cricket), bowling academy based in Chennai. Chennai is home to the most successful Indian Premier League (IPL) cricket team Chennai Super Kings and hosted the finals during the Indian premier league 2011, 2011, 2012 Indian Premier League, 2012, and 2024 Indian Premier League, 2024 seasons. Jawaharlal Nehru Stadium (Chennai), Jawaharlal Nehru Stadium is a multi-purpose venue which hosts Association football, football and Sport of athletics, athletics and also houses a multi–purpose indoor complex for volleyball, basketball, kabaddi and table tennis. Chennai hosted the 1995 South Asian Games. Football club Chennaiyin FC competes in Indian Super League (ISL), the top tier association football league of India and uses the Nehru Stadium for their home matches. Mayor Radhakrishnan Stadium is associated with Field hockey, hockey and was venue for the international hockey tournament the 2005 Men's Hockey Champions Trophy, 2005 Men's Champions Trophy and the 2007 Men's Hockey Asia Cup, 2007 Men's Asia Cup. Water sports are played in the Velachery Aquatic Complex. Chennai was the host of the only ATP World Tour event in India, the Chennai Open held at SDAT Tennis Stadium from 1997 to 2017. Vijay Amritraj, Mahesh Bhupathi Ramesh Krishnan and Somdev Devvarman were professional tennis players from Chennai. Chennai was home to Chennai Slam, two-time national champion of India's top professional basketball division, the UBA Pro Basketball League. Madras Boat Club (founded in 1846) and Royal Madras Yacht Club (founded in 1911) promote sailing, rowing and canoeing sports in Chennai. Inaugurated in 1990, Madras Motor Race Track was the first permanent racing circuit in India and hosts formula racing events. Formula One driver Karun Chandhok was from the city. Horse racing is held at the Guindy Race Course and the city has two 18-hole golf courses, the Cosmopolitan Club (Chennai), Cosmopolitan Club and the Gymkhana Club, Chennai, Gymkhana Club established in the late nineteenth century. Chennai is often dubbed "India's chess capital" as the city is home to multiple chess Grandmaster (chess), grandmasters including former world champion Viswanathan Anand. The city played host to the World Chess Championship 2013 and 44th Chess Olympiad in 2022. Other sports persons from Chennai include table tennis player Sharath Kamal and two–time world carrom champion, Maria Irudayam.


City based teams


International relations


Foreign missions

The consular presence in the city dates back to 1794, when William Abbott was appointed US consular agent for South India. , there are 60 foreign representations in Chennai, including 16 consulates general and 28 honorary consulates. Consulate General of the United States, Chennai, American Consulate in Chennai is amongst the top employment-based visa processing centres. The Foreigners Regional Registration Office (FRRO) is in charge of immigration and registration activities in the city.


Sister cities

Chennai has Twin towns and sister cities, sister city relationships with the following cities of the world:


Notable people


See also

*Areas of Chennai *Timeline of Chennai history


Notes


References


External links


Official website
of Chennai district
Chennai
''Encyclopædia Britannica'' entry {{Authority control Chennai, Cities and towns in Chennai district Metropolitan cities in India Populated coastal places in India Port cities in India Coromandel Coast Populated places established in the 1640s 1640s establishments in Asia Smart cities in India