From Wikipedia, the free encyclopedia
Chennai metropolitan area includes the city of
Chennaiand its suburbs.
Metropolitan area in Tamil Nadu, India
Chennai Metropolitan Area
Greater Chennai
Chennai skyline
Nickname(s): Health Capital of India, Gateway of
South India,
Detroitof Asia
CMA expanded boundary
Country India State Tamil Nadu Core city Chennai Districts • Metro 5,904 km2 (2,280 sq mi) • Rank 4 • Metro 12,288,000 • Metro density 2,100/km2 (5,400/sq mi) Demonym(s) Chennaivasi, Chennaiite Time zone UTC+5:30 (Indian Standard Time) GDP US$ 219 Billion[1] Website www.cmdachennai.gov.in Area note: Area of CMA was expanded from 1189 sq.km to 5904 sq.km in 2022.[2] Population note: As per the 2011 census, population corresponding to the pre-expansion limits was about 8.9 million.[3] The population estimate corresponding to the post-expansion limits was given as 12.28 million (based on the 2011 census) by CMDA.[4]Chennai Metropolitan Area (CMA) or Greater Chennai is the fourth-most populous metropolitan area in India and the 35th most populous in the world. It consists of the core city of Chennai, which is coterminous with the Chennai district, and its suburbs in Kanchipuram, Chengalpattu, Thiruvallur and Ranipet districts.
The Chennai Metropolitan Development Authority (CMDA) is the nodal agency that handles town planning and development within the metro area. In 1974, an area encompassing 1,189 km2 (459 sq mi) around the city was designated as the metropolitan area which was subsequently expanded to 5,904 km2 (2,280 sq mi) in 2022.
In 1974, the Madras metropolitan area comprised a total extent of 1,189 km2 (459 sq mi).[5] In 2011, first plans to expand the metropolitan area were proposed by Chennai Metropolitan Development Authority (CMDA) as several settlements on the outer vicinity had been undergoing rapid development and had to be incorporated under the CMDA planning strategy. While other metropolises in India had already redefined their respective metropolitan regions to include much larger areas, CMA had not been altered since it was first defined in 1974.[6] In July 2012, the CMDA suggested two options to the Government of Tamil Nadu for expanding the area with the first option including the whole of the Chennai, seven taluks each from Tiruvallur and Kancheepuram districts extending up to 4,459 km2 (1,722 sq mi) and the second option including the whole of Chennai, Tiruvallur and Kancheepuram districts and Arakkonam taluk extending to a total of 8,878 km2 (3,428 sq mi).[7] In July 2017, the Government of Tamil Nadu announced its intention to expand the CMA to 8,878 km2 (3,428 sq mi) with the whole process expected to be completed by July 2018.[8][9]
On 22 January 2018, Government of Tamil Nadu issued a Government order to declare the intention to include additional areas in the Chennai Metropolitan Planning Area under the Tamil Nadu Town and Country Planning Act, 1971.[10][11] As per the act, the government is required to allow reasonable opportunity (two months) for inhabitants, local authorities and institutions in the area to comment upon or object to such an expansion proposals and few objections were received including a public interest litigation filed at the Madras High Court in March 2018.[12][13] The plan was later modified and in October 2022, the metropolitan area was expanded to 5,904 km2 (2,280 sq mi).[14]
Distribution and composition[edit]The metropolitan area consists of four municipal corporations (Greater Chennai, Tambaram, Avadi, Kancheepuram), 12 municipalities (Arakkonam, Mangadu, Kundrathur, Poonamallee, Thiruverkadu, Thiruninravur, Tiruvallur, Tiruttani, Maraimalai Nagar, Chengalpattu, Ponneri, Guduvancheri) and other smaller panchayats spread across the districts of Chennai, Thiruvallur, Kancheepuram, Chengalpattu and Ranipet.[15] The planning and development is overseen by the Chennai Metropolitan Development Authority (CMDA), a Tamil Nadu State Government organisation in charge of town in the region.[16] CMA is divided into three zones – north, central and south.[17]
The State government had announced the formation of six satellite townships — Minjur covering 111 sq. kilometres, Thirumazhisai 34 sq. km., Chengalpattu 136 sq. km., Mamallapuram 123 sq. km., Kancheepuram 99 sq. km. and Tiruvallur 37 sq. km., through Government Orders (G.O.) issued in 2023. [18]
Constituents of Chennai Metropolitan Area[19] Zone Area (km2) District Taluk Central 1,189 Chennai district Alandur, Ambattur, Aminjikarai, Ayanavaram, Egmore, Guindy, Madhavaram, Maduravoyal, Mambalam, Mylapore, Perambur, Purasawalkam, Sholinganallur, Thiruvottiyur, Tondiarpet, Velachery Chengalpattu district Pallavaram, Tambaram, Vandalur Kanchipuram district Kundrathur Tiruvallur district Avadi, Poonamallee, Ponneri North 2,908 Tiruvallur district Gummidipoondi, Poonamallee, Ponneri, Tiruvallur, Tiruttani, Uthukottai Kanchipuram district Sriperumbudur Ranipet district Arakkonam, Nemili South 1,809 Chengalpattu district Chengalpattu, Tirukalukundram, Thiruporur, Vandalur Kanchipuram district Kundrathur, Kanchipuram, WalajabadThe CMDA regulates developments in the Chennai metropolitan area through the issuance of planning permission under section 49 of the Tamil Nadu Town and Country Planning Act 1971.[12][20]
Agencies responsible for public services[21] Agency Responsibility Chennai Metropolitan Development Authority Urban planning and project implementation Local bodies (Municipal Corporations, Municipalities and Panchayats) Civic management Chennai MetroWater Supply and Sewage Board Water Supply and sewerage Chennai Unified Metropolitan Transport Authority Transport and transport infrastructure Department of HighwaysAs of 2017[update], the GDP of the metropolitan is estimated at US$ 219 billion, ranking it amongst the most productive metro areas of India.[22] Chennai has a broad industrial base in the automobile, computer, technology, hardware manufacturing and healthcare sectors. As of 2012[update], the city is India's second-largest exporter of information technology (IT) and business process outsourcing (BPO) services.[23][24] A major part of India's automobile industry is located in and around the city thus earning it the nickname "Detroit of Asia".[25][26][27] According to Euromonitor, Chennai is the third-most visited city in India by international tourists and is known as the "Gateway to South India".[28][29]
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