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{{hatnote|Chennai metropolitan area includes the city of [[Chennai]] and its suburbs.}}
{{Use dmy dates|date=June 2018}}
{{Use dmy dates|date=June 2018}}
{{Use Indian English|date=June 2018}}
{{Use Indian English|date=June 2018}}
{{hatnote|Metropolitan area includes a city and its suburbs. For the city, visit [[Chennai district]].}}
The '''Chennai Metropolitan Area''' ('''CMA'''), or '''Greater Chennai''', is the fourth-most populous [[metropolitan area]] in [[India]], the 22nd-most in [[Asia]], and the 40th-most in the world. The CMA consists of the central city of [[Chennai]] and its [[suburbs]] distributed in [[Kanchipuram district|Kanchipuram]], [[Chengalpattu district|Chengalpattu]], [[Tiruvallur district|Thiruvallur]] districts and [[Arakkonam]] in Ranipet district. The [[Chennai Metropolitan Development Authority]] (CMDA) is the nodal agency that handles town planning and development within the metro area. Since 1974, an area encompassing 1189&nbsp;km<sup>2</sup> around the city has been designated as the CMA and the CMDA has been designated as the authority to plan the growth of the city and the area around it.
{{Infobox settlement
{{Infobox settlement
| name                           = Greater Chennai
| name               = Chennai metropolitan area
| settlement_type                 = [[Metropolitan area]]
| settlement_type   = [[Metropolitan area]]
| image_skyline                   = Chennai revenue divisions map.png
| image_skyline     = Chennai_skyline.JPG
| image_alt                       = A graphic showing the divisions of the Chennai metropolitan area
| image_alt         =  
| image_caption                   =  
| image_caption     = Chennai skyline
| etymology                       =  
| etymology         =  
| nickname                        =  
| nicknames          =  
| latd                           =  
| latd               =  
| longd                           =  
| longd             =  
| subdivision_type               = [[Country]]
| subdivision_type   = Country
| subdivision_name               = [[India]]
| subdivision_name   = India
| subdivision_type1               = [[States and territories of India|State]]
| subdivision_type1 = [[States and territories of India|State]]
| subdivision_name1               = [[Tamil Nadu]]
| subdivision_name1 = [[Tamil Nadu]]
| seat_type                       = [[Core city]]
| seat_type         = [[Core city]]
| seat                           = [[Chennai]]
| seat               = [[Chennai]]
| parts_type                     = [[List of districts of India|Districts]]
| parts_type         = [[List of districts of Tamil Nadu|Districts]]
| parts                           = {{ubl|[[Chennai district|Chennai]]| and parts of [[Kancheepuram district|Kancheepuram]]|[[Chengalpattu district|Chengalpattu]]| and [[Tiruvallur district|Tiruvallur]] districts}}
| parts             = {{ubl|[[Chennai district|Chennai]], [[Kancheepuram district|Kancheepuram]], [[Chengalpattu district|Chengalpattu]], [[Tiruvallur district|Tiruvallur]], [[Ranipet district|Ranipet]]}}
| population_metro                = 13,300,253
| population_footnotes =
| population_footnotes            = <ref name="demog2017">{{cite web|title=World Urban Areas 13th Annual Edition|url=http://www.demographia.com/db-worldua.pdf|website=Demographia|date=April 2017}}</ref>(urban)
| area_metro_km2    = 5904
| area_total_km2                  = 1189
| population_density_km2 = auto
| area_footnotes                  = <ref name="cmda home"/>
| population_demonym = Chennai vasi, Chennaiite, Chennai karan
| population_density_km2          = auto
| population_as_of  = 2023
| population_demonym              = Chennaivasi, Chennaiite
| population_density_urban_km2 = auto
| area_urban_km2                  = 426
| population_metro  = 14510000
| area_metro_km2                  = 8452
| population_density_metro_km2 = auto
| population_as_of                = 2018
| population_rank    = [[List of metropolitan areas in India|4]]
| population_urban                =
| population_density_blank1_km2 = auto
| population_density_urban_km2    = 11000
| timezone1          = [[Indian Standard Time]]
<ref name="extended UA 2011">{{cite web|title=India Stats: Million plus cities in India as per Census 2011|url=http://pibmumbai.gov.in/scripts/detail.asp?releaseId=E2011IS3|website=Press Information Bureau, Mumbai|publisher=National Informatics Centre|access-date=20 August 2015|archive-url=https://web.archive.org/web/20150630112755/http://pibmumbai.gov.in/scripts/detail.asp?releaseId=E2011IS3|archive-date=30 June 2015|url-status=dead}}</ref>
| utc_offset1        = +5:30
| population_density_metro_km2    = 1100
| blank_name_sec1    = [[Gross Domestic Product|GDP]]
| timezone1                      = [[Indian Standard Time]]
| blank_info_sec1    = US$ 219 Billion<ref>{{cite web|title=At US$219 billion, the Chennai metropolitan area is the fourth largest city by GDP in India|url=https://urbanemissions.info/india-apna/chennai-india/|work=Urban emissions|access-date=1 December 2024}}</ref>
| utc_offset1                    = +5:30
| website            = {{URL|www.cmdachennai.gov.in}}
| website                        = {{URL|http://www.cmdachennai.gov.in/}}
| official_name      =  
| official_name                  =  
| other_name        = Greater Chennai
| other_name                      = Chennai Metropolitan Area
| footnotes          = Area note: Area of CMA was expanded from 1189 sq.km to 5904 sq.km in 2022.<ref name="cmda home">{{cite web|title=Chennai Metropolitan Development Authority|url=https://www.cmdachennai.gov.in/|publisher=[[Government of Tamilnadu]]|access-date=9 July 2017}}</ref>
Population note: As per the 2011 census, population corresponding to the pre-expansion limits was about 8.9 million.<ref>{{cite web|url=https://www.cmavision.in/about-cma/|title=About CMA|work=[[Chennai Metropolitan Development Authority]]|access-date=1 June 2024}}</ref> The population estimate corresponding to the post-expansion limits was given as 11.76 million (based on census 2011) by [[Chennai Metropolitan Development Authority|CMDA]].<ref name="Pop">{{cite tweet|author=[[Chennai Metropolitan Development Authority]]|title=Population of Chennai Metropolitan Area|user=CMDA_Official|number=1762023999947558914|date=26 February 2024}}</ref> The estimated population in 2023 was given as 14.51 million by CMDA.<ref>{cite report|url=https://cumta.tn.gov.in/upload/2025/11/14/1763097757-F8F1P.pdf|title=Comprehensive Mobility Plan 2023-2048|work=Chennai Metropolitan Development Authority|date=14 November 2025|access-date=18 November 2025}</ref>
| image_map          = Cma-overview-map.png
| map_caption        = CMA expanded boundary
}}
}}
'''Chennai metropolitan area''' or '''Greater Chennai''' is the [[List of metropolitan areas in India|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 district|Kanchipuram]], [[Chengalpattu district|Chengalpattu]], [[Tiruvallur district|Thiruvallur]] and [[Ranipet district|Ranipet]] districts.


[[File:CMDA masterplan.jpg|thumb|200px|The [[Chennai Metropolitan Development Authority|CMDA]] masterplan for the CMA]]
The [[Chennai Metropolitan Development Authority]] is the nodal agency that handles town planning and development within the metro area. In 1974, an area encompassing {{cvt|1189|km2}} around the city was designated as the metropolitan area which was subsequently expanded to {{cvt|5904|km2}} in 2022.


== Economy ==
== History ==
{{Main|Economy of Chennai}}
In 1974, the Madras metropolitan area comprised a total extent of {{cvt|1189|km2}}.<ref>{{cite web|url=https://www.cmdachennai.gov.in/maps.html|title=CMDA map|publisher=Government of Tamil Nadu|access-date=1 November 2023}}</ref> 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.<ref>{{cite news|url=http://www.ibnlive.com/news/india/final-call-on-greater-chennai-by-fiscal-year-end-395197.html |title = Final call on Greater Chennai by fiscal year-end|work=IBN Live|date=26 August 2011|access-date=1 November 2023}}</ref> 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 district|Chennai]], seven taluks each from [[Tiruvallur district|Tiruvallur]] and [[Kancheepuram district]]s extending up to {{cvt|4459|km2}} and the second option including the whole of Chennai, Tiruvallur and Kancheepuram districts and Arakkonam taluk extending to a total of {{cvt|8878|km2}}.<ref>{{cite news|author=C. Shivakumar |url=http://newindianexpress.com/cities/chennai/article586493.ece |archive-url=https://web.archive.org/web/20131024071103/http://newindianexpress.com/cities/chennai/article586493.ece |url-status=dead |archive-date=24 October 2013 |title=Push to expand Chennai metropolitan area|newspaper=[[The New Indian Express]]|date=10 August 2012|access-date=1 November 2023}}</ref> In July 2017, the Government of Tamil Nadu announced its intention to expand the CMA to {{convert|8878|km2|abbr=on}} with the whole process expected to be completed by July 2018.<ref>{{cite news|title=Metropolitan Area set to expand|url=https://www.PressReader.com/India/the-Hindu/20170704/281492161339750|newspaper=[[The Hindu]]|via=[[PressReader]]|date=4 July 2017|access-date=1 November 2023}}</ref><ref>{{cite news|last1=Mariappan|first1=Julie|title=5-year wait ends, Chennai finally set for seven-fold expansion|url=https://timesofindia.indiatimes.com/city/chennai/5-year-wait-ends-chennai-finally-set-for-seven-fold-expansion/articleshow/59433941.cms|newspaper=[[The Times of India]]|date=4 July 2017|access-date=1 November 2023}}</ref>
Recent estimates of the economy of the Chennai Metropolitan Area is US$110 billion (over $200 billion with industrial zones)(PPP GDP), ranking it from third to fourth most productive metro area of India, and the third highest by GDP per capita.The metropolitan area doesn't include the nearby industrial zones of Siruseri and Sriperumbudur, due to which these regions' economy doesn't get included in the total economy of Chennai. If these regions are included, the economy of chennai would be somewhere over $200 billion. Recent estimates of the economy of the Chennai Metropolitan Area is US$110 billion (over $200 billion with industrial zones)([[Purchasing power parity|PPP]] [[Gross domestic product|GDP]]), ranking it from [[List of cities by GDP|third to fourth most productive metro area]] of India, and the [[List of Indian cities by GDP (per capita)|third highest]] by GDP per capita. The metropolitan area doesn't include the nearby industrial zones of [[Siruseri]] and [[Sriperumbudur]], due to which these regions' economy doesn't get included in the total economy of Chennai. If these regions are included, the economy of chennai would be somewhere over $200 billion.


== Composition ==
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.<ref>{{cite news|title=Your word matters in Chennai's expansion|url=https://www.newindianexpress.com/cities/chennai/2018/feb/06/your-word-matters-in-chennais-expansion-1769069.html|newspaper=[[The New Indian Express]]|date=6 February 2018|access-date=1 November 2023}}</ref><ref>{{cite web |last1=Krishnan|first1=S |title=G.O. (Ms) No.13 |url=http://cms.tn.gov.in/sites/default/files/go/hud_e_13_2018_0.pdf|publisher=[[Government of Tamil Nadu]]|access-date=6 February 2018|date=22 January 2018}}</ref> 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 in India|public interest litigation]] filed at the [[Madras High Court]] in March 2018.<ref name="Act">{{cite act|url=http://www.tn.gov.in/tcp/acts_rules/Town_Country_Planning_Act_1971.pdf |title=The Tamil Nadu Town and Country Planning Act, 1971 (Tamil Nadu Act 35 of 1972) | year=1971 |legislature=[[Legislative Assembly of Tamil Nadu]] |access-date=1 September 2015}}</ref><ref>{{cite news|last1=Kabirdoss|first1=Yogesh|title=CMDA to seek public opinion on Chennai expansion, clear doubts|url=https://timesofindia.indiatimes.com/city/chennai/cmda-to-seek-public-opinion-on-city-expansion-clear-doubts/articleshow/63618616.cms|newspaper=[[The Times of India]]|date=5 April 2018|access-date=1 November 2023}}</ref> The plan was later modified and in October 2022, the metropolitan area was expanded to {{cvt|5904|km2}}.<ref>{{cite news|url=https://www.thehindu.com/news/cities/chennai/government-issues-order-for-expanding-chennai-metropolitan-planning-area-to-5904-sq-km/article66041750.ece|title=Order issued for expansion of Chennai to 5,904 sq. Km; over 1,200 villages set to be added|newspaper=[[The Hindu]]|date=21 October 2022|access-date=1 November 2023}}</ref>


The CMA is a [[metropolitan area]] in [[Tamil Nadu]] state, consisting of the state capital [[Chennai district|Chennai]] (previously known as Madras) and its satellite towns. Developing over a period of about 20 years, it consists of 8 [[municipal corporation]]s and 14 smaller municipal councils. The entire area is overseen by the [[Chennai Metropolitan Development Authority]] (CMDA), a [[Tamil Nadu]] State Government organisation in charge of town planning, development, transportation and housing in the region. The CMDA was formed to address the challenges in planning and development of integrated infrastructure for the metropolitan region. The areas outside [[Greater Chennai Corporation]] ([[Chennai District]]) like [[Kanchipuram district|Kanchipuram]] and [[Tiruvallur district|Tiruvallur]] have lacked organised development.
== Distribution and composition ==
The metropolitan area consists of four [[municipal corporation]]s ([[Greater Chennai Corporation|Greater Chennai]], [[Tambaram City Municipal Corporation|Tambaram]], [[Avadi Municipal Corporation|Avadi]], [[Kanchipuram Municipal Corporation|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 district|Chengalpattu]] and [[Ranipet district|Ranipet]].<ref>{{cite web|url=https://www.cmdachennai.gov.in/LocalbodyList.html|title=Local body list|publisher=[[Chennai Metropolitan Development Authority]]|access-date=1 June 2024}}</ref> 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.<ref>{{cite web|url=https://www.cmdachennai.gov.in/aboutcmda.html|title=About CMDA|publisher=[[Chennai Metropolitan Development Authority]]|access-date=1 June 2024}}</ref> CMA is divided into three zones {{ndash}} north, central and south.<ref>{{cite news |title=Chennai Metropolitan Area to be trifurcated, will cover 5,904 sqkm |url=https://www.newindianexpress.com/states/tamil-nadu/2022/sep/28/chennai-metropolitan-area-to-be-trifurcated-will-cover-5904-sqkm-2502600.html|newspaper=[[The New Indian Express]] |access-date=25 December 2022 |date=28 September 2022}}</ref>
[[File:Chennai metropolitan area boundaries.jpg|right|303x303px]]


The CMA comprises the city of [[Chennai]], [[Avadi]], 8 Municipalities, 11 Town Panchayats and 179 Village Panchayats in 10 Panchayat Unions. The CMA has an area of 1,189&nbsp;km<sup>2</sup>.<ref name="cmda home">{{cite web|title=Chennai Metropolitan Development Authority |url=http://www.cmdachennai.gov.in/|website=www.cmdachennai.gov.in|publisher=Government of Tamilnadu, India|access-date=9 July 2017|language=en}}</ref> It includes the whole of the [[Chennai District]], along with the [[Ambattur taluk|Ambattur]], [[Gummidipoondi taluk|Gummidipoondi]], [[Madhavaram taluk|Madhavaram]], [[Ponneri taluk|Ponneri]], [[Poonamallee taluk|Poonamallee]] and [[Tiruvallur taluk]]s of the [[Tiruvallur District]], [[Sriperumbudur taluk|Sriperumbudur]] and [[Kundrathur]] taluks of the [[Kanchipuram district|Kancheepuram District]], [[Pallavaram taluk|Pallavaram]], [[Vandalur]] and [[Tambaram taluk]]s of the [[Chengalpattu district]].
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., [[Kanchipuram|Kancheepuram]] 99 sq. km. and [[Tiruvallur]] 37 sq. km., through Government Orders (G.O.) issued in 2023.<ref>{{Cite news |date=2024-05-08 |title=CMDA prepares blueprints for six satellite towns, consultants appointed to prepare DPR for four |url=https://www.thehindu.com/news/cities/chennai/cmda-prepares-blueprints-for-six-satellite-towns-consultants-appointed-to-prepare-dpr-for-four/article68153467.ece |access-date=2024-08-20 |work=The Hindu |language=en-IN |issn=0971-751X}}</ref>


The CMA falls in three Districts of the Tamil Nadu State viz. [[Chennai District]], part of [[Thiruvallur District]], and part of [[Kancheepuram District]]. The extent of the Chennai District (covered in Chennai Municipal Corporation area) is 426&nbsp;km<sup>2</sup> and comprises 55 revenue villages in 10 Taluks [viz. (i) Tondiarpet Taluk, (ii) Perambur Taluk, (iii) Purasawalkam Taluk, (iv) Egmore Taluk, (v) Mambalam Taluk, (vi) Guindy Taluk, (vii) Mylapore Taluk, (viii) Velachery Taluk, (ix) Aminjikarai Taluk and (x) Ayanavaram Taluk. In Thiruvallur District out of total district area of 3,427&nbsp;km<sup>2</sup>, 637&nbsp;km<sup>2</sup>. in Ambattur, Thiruvallur, Ponneri and Poonamallee taluks fall in CMA. In Kancheepuram District out of 4,433&nbsp;km<sup>2</sup>, 376&nbsp;km<sup>2</sup> in Tambaram, Sriperumbudur and [[Chengalpattu district]] fall in the metropolitan area.
{| class="wikitable sortable" style="font-size: 100%"
|+Constituents of Chennai Metropolitan Area<ref>{{cite report|url=https://www.cmdachennai.gov.in/pdfs/masterplan.pdf|title=Master plan|publisher=[[Chennai Metropolitan Development Authority]]|access-date=1 June 2024}}</ref>
! Zone
! Area (km<sup>2</sup>)
! style="width:15em;"|District
! Taluk
|-
|rowspan="4"|Central
|rowspan="4"|{{Formatnum:1189}}
|[[Chennai district]]
|[[Alandur taluk|Alandur]], [[Ambattur taluk|Ambattur]], [[Aminjikarai taluk|Aminjikarai]], [[Ayanavaram taluk|Ayanavaram]], [[Egmore taluk|Egmore]], [[Guindy taluk|Guindy]], [[Madhavaram taluk|Madhavaram]], [[Maduravoyal taluk|Maduravoyal]], [[Mambalam taluk|Mambalam]], [[Mylapore taluk|Mylapore]], [[Perambur taluk|Perambur]], [[Purasawalkam taluk|Purasawalkam]], [[Sholinganallur taluk|Sholinganallur]], [[Thiruvottiyur taluk|Thiruvottiyur]], [[Tondiarpet taluk|Tondiarpet]], [[Velachery taluk|Velachery]]
|-
|[[Chengalpattu district]]
|[[Pallavaram taluk|Pallavaram]], [[Tambaram taluk|Tambaram]], [[Vandalur taluk|Vandalur]]
|-
|[[Kanchipuram district]]
|[[Kundrathur taluk|Kundrathur]]
|-
|[[Tiruvallur district]]
|[[Avadi taluk|Avadi]], [[Poonamallee taluk|Poonamallee]], [[Ponneri taluk|Ponneri]]
|-
|rowspan="3"|North
|rowspan="3"|{{Formatnum:2908}}
|[[Tiruvallur district]]
|[[Gummidipoondi taluk|Gummidipoondi]], [[Poonamallee taluk|Poonamallee]], [[Ponneri taluk|Ponneri]], [[Tiruvallur taluk|Tiruvallur]], [[Tiruttani taluk|Tiruttani]], [[Uthukottai taluk|Uthukottai]]
|-
|[[Kanchipuram district]]
|[[Sriperumbudur taluk|Sriperumbudur]]
|-
|[[Ranipet district]]
|[[Arakkonam taluk|Arakkonam]], [[Nemili]]
|-
|rowspan="2"|South
|rowspan="2"|{{Formatnum:1809}}
|[[Chengalpattu district]]
|[[Chengalpattu taluk|Chengalpattu]], [[Tirukalukundram taluk|Tirukalukundram]], [[Thiruporur taluk|Thiruporur]], [[Vandalur taluk|Vandalur]]
|-
|[[Kanchipuram district]]
|[[Kundrathur taluk|Kundrathur]], [[Kanchipuram taluk|Kanchipuram]], [[Walajabad taluk|Walajabad]]
|}


CMA region has about 3,000 water bodies, most of which have been encroached upon by real estate dealers and small communities.<ref>{{cite news |last=Hemalatha |first=Karthikeyan |date=10 November 2012 |title=40 Chennai lakes to get a new lease of life |location=Chennai |url=http://articles.timesofindia.indiatimes.com/2012-11-10/chennai/35033557_1_chennai-lakes-water-bodies-public-spaces |archive-url=https://archive.today/20130126155144/http://articles.timesofindia.indiatimes.com/2012-11-10/chennai/35033557_1_chennai-lakes-water-bodies-public-spaces |url-status=dead |archive-date=26 January 2013 |newspaper=[[The Times of India]] |access-date=10 Nov 2012}}</ref>
== Administration ==
The [[Chennai Metropolitan Development Authority|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.<ref name="Act"/><ref>{{cite news|author=Aloysius Xavier Lopez |title=Challenging times for building panel |newspaper=[[The Hindu]]|date=10 November 2012|url=http://www.thehindu.com/news/cities/chennai/challenging-times-for-building-panel/article4082211.ece}}</ref>


The Chennai metropolitan area is set to be expanded further, incorporating the entire districts of [[Tiruvallur]] and [[Kancheepuram]], and the [[Arakkonam taluk]], [[Nemili|Nemili Taluk]] of the [[Ranipet district]].<ref>{{cite news|title=Chennai Expansion Could Be Tricky, Suggests History|url=http://www.newindianexpress.com/states/tamil_nadu/Chennai-Expansion-Could-Be-Tricky-Suggests-History/2015/08/24/article2990394.ece|work=The New Indian Express|author=C Shivakumar |date=24 August 2015}}</ref> In future it may expand further. Plans to expand Chennai Metropolitan Area seven folds from existing 1,189 sq. km to 8,878 sq. km appears to be scaled down in view of opposition from the farmer in giving up their agricultural lands. The Government is looking at maximum utilization of the available spaces in the core city and urbanized pockets in the suburbs for residential development. Only area well connected with the available rail infrastructure will be included in the expansion plan of CMA. The extent of expansion will be scaled down from 8,878 sq. km to 3,000–4,000 sq. km. <ref>{{cite news |title=Government may scale down metropolis expansion|url=https://timesofindia.indiatimes.com/city/chennai/government-may-scale-down-metropolis-expansion/articleshow/67481021.cms|author=Yogesh Kabirdoss|date=11 January 2019|work=The Times of India}}</ref>
{| class="wikitable" style="font-size: 100%"
 
|+Agencies responsible for public services<ref>{{cite web|url=https://citizenmatters.in/chennai-governance-corporation-mtc-railways-cmrl-tnpcb-tnhb/|title=Who administers and provides public services in Chennai?|date=21 August 2021|access-date=1 June 2024|work=Citizen matters}}</ref>
== Nodal agencies ==
|-
 
!Agency
{|class=wikitable
!Responsibility
|-
|[[Chennai Metropolitan Development Authority]]
|Urban planning and project implementation
|-
|Local bodies ([[Municipal Corporation]]s, [[Municipalities]] and [[Panchayati raj in India|Panchayat]]s)
|Civic management
|-
|[[Chennai MetroWater Supply and Sewage Board]]
|Water Supply and sewerage
|-
|[[Chennai Unified Metropolitan Transport Authority]]
|[[Transport in Chennai|Transport and transport infrastructure]]
|-
|[[Department of Highways and Minor Ports (Tamil Nadu)|Department of Highways]] <br/> Tamil Nadu Road Infrastructure Development Corporation <br> Tamil Nadu Road Development Company
|Construction and maintenance of highways and roads
|-
|Chennai-Ennore Port Road Company
|Maintenance of road connecting ports
|-
|[[Metropolitan Transport Corporation (Chennai)|Metropolitan Transport Corporation]] <br/> [[Tamil Nadu State Transport Corporation]] <br> [[State Express Transport Corporation]]
|Public bus transport
|-
|[[Chennai Metro Rail Limited]]
|[[Chennai Metro|Metro rail transport]]
|-
|[[Southern Railway (India)|Southern Railway]]
|Railway, [[Chennai suburban railway|Suburban railway]] and [[Chennai MRTS|MRTS]]
|-
|Regional Transport department
|Transport services (Vehicle registration and compliance, road taxes, driving license)
|-
|Commissionerate of Road Safety
|Road safety
|-
|[[Chennai Port Trust]]
|[[Chennai Port|Port]]
|-
|-
!Sn!!Agency!!Responsibility
|[[Airports Authority of India]]
|[[Chennai Airport|Airport]] and air transport
|-
|-
!1
|Chennai Smart City Limited
|[[Greater Chennai Corporation]] (Madras Corporation), [[Avadi|Avadi Corporation]], [[Municipalities]] and [[Panchayat]]s||Civic management in their area of jurisdiction
|Core infrastructure transformation and rejuvenation
|-
|-
!2
|[[Chennai City Traffic Police]] <br> [[Avadi Traffic Police]] <br> [[Tambaram Traffic Police]] <br> Traffic police of Tiruvallur, Kanchipuram, Chengalpattu and Ranipet districts
|[[Tamil Nadu Housing Board]] ||provision of plots and ready-built houses, Sites and Services schemes
|Traffic management
|-
|-
!3
|[[Greater Chennai Police]] <br> District police of Tiruvallur, Kanchipuram, Chengalpattu and Ranipet districts
|[[Metropolitan Transport Corporation (Chennai)|Metropolitan Transport Corporation]] ||Bus Transport
|Crime, cyber crime and law & order management
|-
|-
!4
|[[Tamil Nadu Electricity Board]] <br/> [[Tamil Nadu Power Distribution Corporation Limited]] <br/>[[Tamil Nadu Power Generation Corporation Limited]] <br/> [[Tamil Nadu Transmission Corporation]]
|[[Chennai Metro Rail Limited|CMRL]]||Metro rail transport department
|Electricity generation and supply
|-
|-
!5
|[[Tamil Nadu Pollution Control Board]]
|[[Chennai City Traffic Police]] ||Traffic Management Schemes
|Pollution control
|-
|-
!6
|[[Department of Revenue (Tamil Nadu)|Department of Revenue]]
|[[Tamil Nadu Electricity Board]] ||Electricity generation and supply
|Revenue administration
|-
|-
!7
|[[Tamil Nadu Public Works Department|Public Works Department]]
|Public Works Department ||Implementation & Maintenance of macro drainage system
|Implementation and maintenance of macro drainage system
|-
|-
!8
|[[Department of Commercial Taxes and Registration (Tamil Nadu)|Department of Registration]]
|[[Chennai Metropolitan Development Authority]] ||Urban planning, coordination of project implementation
|Land registration, stamp duties
|-
|-
!9
|[[Tamil Nadu Housing Board]]
|[[Chennai MetroWater Supply and Sewage Board]]||Water Supply & Sewerage facilities for CMA
|Provision of plots and houses, sites and services
|-
|-
!10
|[[Tamil Nadu Urban Habitat Development Board]]
|[[Tamil Nadu Slum Clearance Board]]||Provision of housing, infrastructure and livelihood programs in slum areas
|Housing, infrastructure and livelihood in slums
|-
|-
!11
|[[Aavin]]
|[[Aavin]] Co-operative society||Providing Milk through co-operative society to the people of Chennai
|Milk procurement and distribution
|-
|-
!12
|[[Southern Railway (India)|Southern Railway]]||[[Chennai suburban railway]] and [[Chennai MRTS]]
|}
|}


== Municipal corporations ==
== Economy ==
 
{{Main|Economy of Chennai}}
#[[Avadi|Avadi Corporation]]
#[[Greater Chennai Corporation]]
 
== Municipalities ==
 
#[[Poonamallee]]
#[[Thiruverkadu]]
#[[Pallavaram]]
#[[Tambaram]]
#[[Pammal]]
#[[Anakaputhur]]
#[[Sembakkam]]
 
== Districts ==
#[[Chennai district]] (complete)
#[[Kanchipuram district]] (partial)
#[[Tiruvallur district]] (partial)
#[[Chengalpattu district]] (partial)


== Taluks ==
{{As of|2017}}, the [[Gross domestic product|GDP]] of the metropolitan is estimated at US$219&nbsp;billion, ranking it amongst the [[List of cities by GDP|most productive metro areas]] of India.<ref>{{cite web|url=https://urbanemissions.info/india-apna/chennai-india/|title=Chennai, India|work=Urban Emissions|access-date=23 July 2024}}</ref> Chennai has a broad industrial base in the automobile, computer, technology, hardware manufacturing and healthcare sectors. {{As of|2012}}, the city is India's second-largest exporter of information technology (IT) and [[business process outsourcing]] (BPO) services.<ref>{{cite web |title=Chennai activities |url=http://www.nasscom.org/chennai-activities |publisher=[[NASSCOM]] |access-date=28 December 2012 |url-status=dead |archive-url=https://web.archive.org/web/20121116141448/http://nasscom.org/chennai-activities |archive-date=16 November 2012}}</ref><ref>{{cite news |title=Chennai emerging as India's Silicon Valley? |url=https://economictimes.indiatimes.com/Infotech/Software/Chennai_emerging_as_Indias_Silicon_Valley/articleshow/3000410.cms |newspaper=[[The Economic Times]] |date=1 May 2008 |access-date=28 December 2012 |first=Rajesh |last=Chandramouli |url-status=live |archive-url=https://web.archive.org/web/20200820000027/https://economictimes.indiatimes.com/Infotech/Software/Chennai_emerging_as_Indias_Silicon_Valley/articleshow/3000410.cms |archive-date=20 August 2020}}</ref> A major part of India's automobile industry is located in and around the city thus earning it the nickname "[[Detroit of Asia]]".<ref>{{cite book |title=Business America |date=1997 |publisher=[[U.S. Department of Commerce]] |page=14 |url=https://books.google.com/books?id=0Aa4AAAAIAAJ }}</ref><ref>{{cite book |author=Chris Devonshire-Ellis |title=Doing Business in India |year=2012 |publisher=[[Springer Science+Business Media|Springer]] |isbn=978-3-642-27617-0 |page=218 |url=https://books.google.com/books?id=aIx9E5I9LB8C&pg=PA218}}</ref><ref>{{cite book |last=U.S. International Trade Commission |title=Competitive Conditions for Foreign Direct Investment in India, Staff Research Study #30 |year=2007 |publisher=DIANE Publishing |isbn=978-1-457-81829-5 |pages=2–10 |url=https://books.google.com/books?id=hMIo-FZXCYEC&pg=SA2-PA10}}</ref> According to [[Euromonitor]], Chennai is the third-most visited city in India by international tourists and is known as the "Gateway to South India".<ref>{{cite web |url=https://www.outlookindia.com/outlooktraveller/explore/story/70874/things-to-do-in-chennai |title=Scorching hot during summer and unbelievably crowded, the modern city of Chennai dipped in traditions from its Madras days never fails to surprise a traveller |last=Mohan |first=Vishnu |date=5 October 2020 |work=[[Outlook (Indian magazine)|Outlook]] |access-date=31 December 2021 }}</ref><ref>{{cite news |last=Vikas |first=S. V. |title=World Tourism Day 2018: Significance, theme and why it is observed |work=[[OneIndia]] |date=27 September 2018 |url=https://www.oneindia.com/india/world-tourism-day-2018-significance-theme-why-it-is-observed-2783487.html |access-date=27 September 2018}}</ref>
In [[Chennai district]]
#[[Alandur taluk|Alandur]]
#[[Ambattur taluk|Ambattur]]
#[[Aminjikarai taluk|Aminjikarai]]
#[[Ayanavaram taluk|Ayanavaram]]
#[[Egmore taluk|Egmore]]
#[[Guindy taluk|Guindy]]
#[[Madhavaram taluk|Madhavaram]]
#[[Maduravoyal taluk|Maduravoyal]]
#[[Mambalam taluk|Mambalam]]
#[[Mylapore taluk|Mylapore]]
#[[Perambur taluk|Perambur]]
#[[Purasawalkam taluk|Purasawalkam]]
#[[Sholinganallur taluk|Sholinganallur]]
#[[Thiruvottiyur taluk|Thiruvottiyur]]
#[[Tondiarpet taluk|Tondiarpet]]
#[[Velachery taluk|Velachery]]
 
In [[Tiruvallur district]]
#[[Poonamallee taluk|Poonamallee]]
#[[Ponneri taluk|Ponneri]] (partial)
#[[Tiruvallur taluk|Tiruvallur]] (partial)
#[[Avadi taluk|Avadi]]
 
In [[Kanchipuram district]]
#[[Sriperumbudur taluk|Sriperumbudur]] (partial)
#[[Kundrathur taluk|Kundrathur]] (partial)
 
In [[Chengalpattu district]]
#[[Pallavaram taluk|Pallavaram]]
#[[Tambaram taluk|Tambaram]]
#[[Vandalur taluk|Vandalur]] (partial)
 
== Expansion ==
[[File:New CMA.png|thumb|200px|Proposed expansion of the CMA (chosen option)]]
The [[Chennai Metropolitan Development Authority|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.<ref>{{cite web|url=http://www.tn.gov.in/tcp/acts_rules/Town_Country_Planning_Act_1971.pdf |title=The Tamil Nadu Town and Country Planning Act, 1971 (Tamil Nadu Act 35 of 1972) |publisher=[[Government of Tamil Nadu]] |access-date=1 September 2015}}</ref><ref>{{cite news |author = Aloysius Xavier Lopez |title = Challenging times for building panel |newspaper = The Hindu |location = Chennai |date = 10 November 2012 |url = http://www.thehindu.com/news/cities/chennai/challenging-times-for-building-panel/article4082211.ece}}</ref>
 
The first plans to expand the CMA were proposed by the CMDA in 2011. The need for expansion arose as several nearby settlements such as [[Sriperumbudur]], [[Kelambakkam]], [[Tiruvallur]] and [[Maraimalai Nagar]] had been undergoing rapid development and had to be incorporated under the CMDA planning strategy. Also, the planning bodies of other metropolises in India such as [[Bengaluru]], [[New Delhi]] and [[Hyderabad]] had already redefined their respective metropolitan regions to include much larger areas and corresponding regional planning was being done. The CMA, however, has not been altered since it was first defined in 1974. The area was limited to {{convert|1189|km2|abbr=on}} which is among the smallest in the country.<ref>{{cite news |url = http://www.ibnlive.com/news/india/final-call-on-greater-chennai-by-fiscal-year-end-395197.html |title = Final call on Greater Chennai by fiscal year-end |work = IBN Live |date = 26 August 2011}}</ref>
 
In July 2012, the CMDA suggested two options to the Government of Tamil Nadu for expanding the area:
*The first option includes the whole of the Chennai district, Madhavaram, Ambattur, Poonamallee, Ponneri, Gummidipoondi, Uthukottai, and Thiruvallur taluks of the Tiruvallur district, and Alandur, Pallavaram, Tambaram, Sholinganallur, Chengalpattu, Thiruporur, and Sriperumbudur taluks of the Kancheepuram district extending up to {{convert|4459|km2|abbr=on}}.
* The second option includes the whole of Chennai, Tiruvallur and Kancheepuram districts and the Arakkonam taluk of Ranipet district and extends to a total of {{convert|8878|km2|abbr=on}}.
 
Chief planners of the CMDA have suggested that the second option is more feasible.<ref>{{cite web|author=C Shivakumar |url=http://newindianexpress.com/cities/chennai/article586493.ece |title=Cities / Chennai : Push to expand Chennai metropolitan area|publisher=New Indian Express |date=2012-08-10 }}</ref> Another planning model, similar to the [[National Capital Region (India)|National Capital Region]] was also examined by the CMDA. In order to plan for balanced regional development, developing a larger road network, implementing an integrated transport plan and identifying a Chennai Mega Region have become necessary.<ref>{{cite web|author=A. Srivathsan |url=http://www.thehindu.com/news/cities/Chennai/article2574682.ece |title=Cities / Chennai : Delhi planning model proposed for city |work=The Hindu |date=2011-10-28 |access-date=2012-11-09}}</ref>
 
On 3 July 2017, the [[Government of Tamil Nadu]]'s minister for housing and urban development, [[Udumalai K. Radhakrishnan]] announced its intention to expand the CMA to {{convert|8878|km2|abbr=on}}. The extension will cover all of Kancheepuram and Tiruvallur districts and Arakkonam taluk of Ranipet district, as proposed in July 2012. Having completed a feasibility study, a "strategic regional plan" was now required, and completion of the whole process was expected by July 2018.<ref>{{cite news|title=Metropolitan Area set to expand|url=https://www.PressReader.com/India/the-Hindu/20170704/281492161339750|work=[[The Hindu]]|publisher=PressReader.com|date=4 July 2017}}</ref><ref>{{cite news|last1=Mariappan|first1=Julie|title=5-year wait ends, Chennai finally set for seven-fold expansion|url=https://timesofindia.indiatimes.com/city/chennai/5-year-wait-ends-chennai-finally-set-for-seven-fold-expansion/articleshow/59433941.cms|work=The Times of India|agency=TNN|date=4 July 2017}}</ref>
 
On 22 January 2018 the Government of Tamil Nadu issued order G.O. (Ms) No.13 to "declare the intention to include additional areas in the Chennai Metropolitan Planning Area" under section&nbsp;2, clause&nbsp;(23-a) of the Tamil Nadu Town and Country Planning Act, 1971 (Tamil Nadu Act&nbsp;35 of 1972). The additional areas to be included were as proposed by the CMDA in 2017.<ref>{{cite news|title=Your word matters in Chennai's expansion|url=http://www.newindianexpress.com/cities/chennai/2018/feb/06/your-word-matters-in-chennais-expansion-1769069.html|work=The New Indian Express|date=6 February 2018}}</ref><ref>{{cite web|last1=Dabrai|first1=Rohit|title=Chennai Metropolitan Area|url=http://www.twenty22.in/2018/01/chennai-metropolitan-area.html|website=www.twenty22.in|date=31 January 2018}}</ref><ref>{{cite web |last1=Krishnan|first1=S |title=G.O. (Ms) No.13 |url=http://cms.tn.gov.in/sites/default/files/go/hud_e_13_2018_0.pdf|publisher=Government of Tamil Nadu|access-date=6 February 2018|date=22 January 2018}}</ref> Under Tamil Nadu Act 35 the Tamil Nadu government is required to allow reasonable opportunity (two months according to §10.3) for inhabitants, local authorities and institutions in the area to comment upon or object to such an expansion proposals.<ref>{{cite web|title=The Tamil Nadu Town and Country Planning Act, 1971 (Tamil Nadu Act 35 of 1972)|url=http://www.tn.gov.in/tcp/acts_rules/Town_Country_Planning_Act_1971.pdf|publisher=Government of Tamil Nadu|date=1971}}</ref>
Although less than 100 objections to the expansion plans were received, a [[Public interest litigation in India|public interest litigation]] action was launched at the [[Madras High Court]] in March 2018.<ref>{{cite news|last1=Kabirdoss|first1=Yogesh|title=CMDA to seek public opinion on Chennai expansion, clear doubts|url=https://timesofindia.indiatimes.com/city/chennai/cmda-to-seek-public-opinion-on-city-expansion-clear-doubts/articleshow/63618616.cms|work=The Times of India|date=5 April 2018}}</ref>
 
== Notes ==
{{reflist|group=note}}


==See also==
==See also==
 
{{Portal|India}}
* [[Mumbai Metropolitan Region|Mumbai metropolitan area]]
* [[National Capital Region (India)|Delhi metropolitan area]]
* [[Kolkata metropolitan area]]
* [[List of metropolitan areas in Asia by population]]
* [[List of metropolitan areas in Asia by population]]
* [[List of metropolitan areas in India]]
* [[List of metropolitan areas in India]]
* [[List of million-plus urban agglomerations in India]]
* [[List of million-plus urban agglomerations in India]]
* [[List of districts in Tamil Nadu by Human Development Index]]
* [[List of urban agglomerations in Tamil Nadu]]
* [[List of urban agglomerations in Tamil Nadu]]


== References ==
== References ==
{{Reflist}}
{{Reflist|2}}


==External links==
==External links==
*[http://www.cmdachennai.gov.in/maps.html Chennai metropolitan area map]
*[http://www.cmdachennai.gov.in/maps.html Chennai metropolitan area map]
*[https://portfolio.cept.ac.in/2018/M/fp/metropolitan-planning-studio-4656-monsoon-2018/planning-for-chennai-metropolitan-area-monsoon-2018-pp0006717 CDMA plan]
*[https://portfolio.cept.ac.in/2018/M/fp/metropolitan-planning-studio-4656-monsoon-2018/planning-for-chennai-metropolitan-area-monsoon-2018-pp0006717 CDMA plan]


{{Chennai Topics}}
{{Chennai Topics}}
Line 203: Line 205:


[[Category:Metropolitan areas of Tamil Nadu]]
[[Category:Metropolitan areas of Tamil Nadu]]
[[Category: Geography of Chennai]]
[[Category:Geography of Chennai]]

Latest revision as of 23:11, 17 March 2026

Chennai metropolitan area includes the city of Chennai and its suburbs.
Chennai metropolitan area
Greater Chennai
Metropolitan area
Chennai skyline
Chennai skyline
Error creating thumbnail: File with dimensions greater than 12.5 MP
CMA expanded boundary
CountryIndia
StateTamil Nadu
Core cityChennai
Districts
Area
 • Metro
5,904 km2 (2,280 sq mi)
Population
 (2023)
 • Rank4
 • Metro
14,510,000
 • Metro density2,500/km2 (6,400/sq mi)
Demonym(s)Chennai vasi, Chennaiite, Chennai karan
Time zoneUTC+5:30 (Indian Standard Time)
GDPUS$ 219 Billion[1]
Websitewww.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 11.76 million (based on census 2011) by CMDA.[4] The estimated population in 2023 was given as 14.51 million by CMDA.[5]

Chennai metropolitan area 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 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.

History[edit | edit source]

In 1974, the Madras metropolitan area comprised a total extent of 1,189 km2 (459 sq mi).[6] 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.[7] 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).[8] 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.[9][10]

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.[11][12] 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.[13][14] The plan was later modified and in October 2022, the metropolitan area was expanded to 5,904 km2 (2,280 sq mi).[15]

Distribution and composition[edit | edit source]

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.[16] 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.[17] CMA is divided into three zones – north, central and south.[18]

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.[19]

Constituents of Chennai Metropolitan Area[20]
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, Walajabad

Administration[edit | edit source]

The 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.[13][21]

Agencies responsible for public services[22]
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 Highways
Tamil Nadu Road Infrastructure Development Corporation
Tamil Nadu Road Development Company 		Construction and maintenance of highways and roads
Chennai-Ennore Port Road Company Maintenance of road connecting ports
Metropolitan Transport Corporation
Tamil Nadu State Transport Corporation
State Express Transport Corporation 		Public bus transport
Chennai Metro Rail Limited Metro rail transport
Southern Railway Railway, Suburban railway and MRTS
Regional Transport department Transport services (Vehicle registration and compliance, road taxes, driving license)
Commissionerate of Road Safety Road safety
Chennai Port Trust Port
Airports Authority of India Airport and air transport
Chennai Smart City Limited Core infrastructure transformation and rejuvenation
Chennai City Traffic Police
Avadi Traffic Police
Tambaram Traffic Police
Traffic police of Tiruvallur, Kanchipuram, Chengalpattu and Ranipet districts 		Traffic management
Greater Chennai Police
District police of Tiruvallur, Kanchipuram, Chengalpattu and Ranipet districts 		Crime, cyber crime and law & order management
Tamil Nadu Electricity Board
Tamil Nadu Power Distribution Corporation Limited
Tamil Nadu Power Generation Corporation Limited
Tamil Nadu Transmission Corporation 		Electricity generation and supply
Tamil Nadu Pollution Control Board Pollution control
Department of Revenue Revenue administration
Public Works Department Implementation and maintenance of macro drainage system
Department of Registration Land registration, stamp duties
Tamil Nadu Housing Board Provision of plots and houses, sites and services
Tamil Nadu Urban Habitat Development Board Housing, infrastructure and livelihood in slums
Aavin Milk procurement and distribution

Economy[edit | edit source]

Main article: Economy of Chennai

As of 2017, the GDP of the metropolitan is estimated at US$219 billion, ranking it amongst the most productive metro areas of India.[23] Chennai has a broad industrial base in the automobile, computer, technology, hardware manufacturing and healthcare sectors. As of 2012, the city is India's second-largest exporter of information technology (IT) and business process outsourcing (BPO) services.[24][25] A major part of India's automobile industry is located in and around the city thus earning it the nickname "Detroit of Asia".[26][27][28] According to Euromonitor, Chennai is the third-most visited city in India by international tourists and is known as the "Gateway to South India".[29][30]

See also[edit | edit source]

References[edit | edit source]

  1. ↑ "At US$219 billion, the Chennai metropolitan area is the fourth largest city by GDP in India". Urban emissions. Retrieved 1 December 2024.
  2. ↑ "Chennai Metropolitan Development Authority". Government of Tamilnadu. Retrieved 9 July 2017.
  3. ↑ "About CMA". Chennai Metropolitan Development Authority. Retrieved 1 June 2024.
  4. ↑ Chennai Metropolitan Development Authority [@CMDA_Official] (26 February 2024). "Population of Chennai Metropolitan Area" (Tweet) – via Twitter.
  5. ↑ {cite report|url=https://cumta.tn.gov.in/upload/2025/11/14/1763097757-F8F1P.pdf%7Ctitle=Comprehensive Mobility Plan 2023-2048|work=Chennai Metropolitan Development Authority|date=14 November 2025|access-date=18 November 2025}
  6. ↑ "CMDA map". Government of Tamil Nadu. Retrieved 1 November 2023.
  7. ↑ "Final call on Greater Chennai by fiscal year-end". IBN Live. 26 August 2011. Retrieved 1 November 2023.
  8. ↑ C. Shivakumar (10 August 2012). "Push to expand Chennai metropolitan area". The New Indian Express. Archived from the original on 24 October 2013. Retrieved 1 November 2023.
  9. ↑ "Metropolitan Area set to expand". The Hindu. 4 July 2017. Retrieved 1 November 2023 – via PressReader.
  10. ↑ Mariappan, Julie (4 July 2017). "5-year wait ends, Chennai finally set for seven-fold expansion". The Times of India. Retrieved 1 November 2023.
  11. ↑ "Your word matters in Chennai's expansion". The New Indian Express. 6 February 2018. Retrieved 1 November 2023.
  12. ↑ Krishnan, S (22 January 2018). "G.O. (Ms) No.13" (PDF). Government of Tamil Nadu. Retrieved 6 February 2018.
  13. ↑ 13.0 13.1 "The Tamil Nadu Town and Country Planning Act, 1971 (Tamil Nadu Act 35 of 1972)". Act of 1971 (PDF). Legislative Assembly of Tamil Nadu. Retrieved 1 September 2015.
  14. ↑ Kabirdoss, Yogesh (5 April 2018). "CMDA to seek public opinion on Chennai expansion, clear doubts". The Times of India. Retrieved 1 November 2023.
  15. ↑ "Order issued for expansion of Chennai to 5,904 sq. Km; over 1,200 villages set to be added". The Hindu. 21 October 2022. Retrieved 1 November 2023.
  16. ↑ "Local body list". Chennai Metropolitan Development Authority. Retrieved 1 June 2024.
  17. ↑ "About CMDA". Chennai Metropolitan Development Authority. Retrieved 1 June 2024.
  18. ↑ "Chennai Metropolitan Area to be trifurcated, will cover 5,904 sqkm". The New Indian Express. 28 September 2022. Retrieved 25 December 2022.
  19. ↑ "CMDA prepares blueprints for six satellite towns, consultants appointed to prepare DPR for four". The Hindu. 8 May 2024. ISSN 0971-751X. Retrieved 20 August 2024.
  20. ↑ Master plan (PDF) (Report). Chennai Metropolitan Development Authority. Retrieved 1 June 2024.
  21. ↑ Aloysius Xavier Lopez (10 November 2012). "Challenging times for building panel". The Hindu.
  22. ↑ "Who administers and provides public services in Chennai?". Citizen matters. 21 August 2021. Retrieved 1 June 2024.
  23. ↑ "Chennai, India". Urban Emissions. Retrieved 23 July 2024.
  24. ↑ "Chennai activities". NASSCOM. Archived from the original on 16 November 2012. Retrieved 28 December 2012.
  25. ↑ Chandramouli, Rajesh (1 May 2008). "Chennai emerging as India's Silicon Valley?". The Economic Times. Archived from the original on 20 August 2020. Retrieved 28 December 2012.
  26. ↑ Business America. U.S. Department of Commerce. 1997. p. 14.
  27. ↑ Chris Devonshire-Ellis (2012). Doing Business in India. Springer. p. 218. ISBN 978-3-642-27617-0.
  28. ↑ U.S. International Trade Commission (2007). Competitive Conditions for Foreign Direct Investment in India, Staff Research Study #30. DIANE Publishing. pp. 2–10. ISBN 978-1-457-81829-5.
  29. ↑ Mohan, Vishnu (5 October 2020). "Scorching hot during summer and unbelievably crowded, the modern city of Chennai dipped in traditions from its Madras days never fails to surprise a traveller". Outlook. Retrieved 31 December 2021.
  30. ↑ Vikas, S. V. (27 September 2018). "World Tourism Day 2018: Significance, theme and why it is observed". OneIndia. Retrieved 27 September 2018.

External links[edit | edit source]

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