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NXS-GRX-IND · Southern Asia · Regions

Tamil Nādu

First-level unit, India: people, area, the units inside and neighbours, with risk values when released.

Page GRX-IND-REdition Baseline Edition 2026Evidence close 2026-09-30ISO IND / INStatus UN member stateValues not yet publishedMethod v1.0.0-draft
83,213,015
people (GHSL 2025)
130,727 km²
area
5.7%
of India
38
units inside

01نقشہ

Inside Tamil Nādu

The 38 ADM2 units of Tamil Nādu.

FIG 1 · 38 units inside Tamil Nādu
نقشہ لوڈ ہو رہا ہے

Units rise with people per km² · GHSL 2025 raster · terrain · ADM1 ADM2Risk values when released
Lowest fifthLow fifthMiddle fifthHigh fifthHighest fifthNo data
Column height and colour show people per km² by unit, in quantile fifths among the units shown (the key on the map gives the breaks); units with no people on the grid are grey, not the lowest class; the raster beneath is the GHSL 2025 population grid. Source observations, not index values. Choose a humanitarian figure from the list to colour and raise the units by it; each figure shows its source on the unit page. Select a unit to drill into the units inside it; the path above the map climbs back.
02Figures

People, area and density

Source observations from open grids summed inside the boundary; not index values.

People · GHSL 2025

83,213,015

5.7% of India.

People · WorldPop 2025

79,799,738

-4% against GHSL; the two grids differ in method.

رقبہ

130,727 km²

637 people per km².

کوڈ

IN-TN

Subdivision code as carried by the boundary source.

Low coastal zone

7,610,884

people on land at or below 10 m, 9.1% of the unit (GEBCO 2024 and GHSL 2025).

03Humanitarian data

Tamil Nādu in humanitarian data

Source observations from the Humanitarian Data Exchange, matched to this unit by name, each with its reference date, provider and licence. They are not index values.

Poverty headcount · 2021-12-31

3.8%

of people in multidimensional poverty. Oxford Poverty & Human Development Initiative · Public Domain / No restrictions (CC0).

04Units

38 units inside Tamil Nādu

Each unit has its own page.

Boundary licences: Creative Commons Attribution 2.5 India (CC BY 2.5 IN) · Open Data Commons Open Database License 1.0.

Unit کوڈ People (GHSL) People (WorldPop) Area km² Per km² Share Coast ≤ 10 m
Ariyalur – 839,269 995,848 1,975.38 425 1% 0
Chengalputtu – 2,539,319 1,834,743 1,748.5 1,452 3.1% 60,415
Chennai – 4,951,411 1,323,383 176.3 28,085 5.9% 2,175,414
Coimbatore – 4,256,114 4,836,746 4,712.83 903 5.1% 0
Cuddalore – 2,948,871 2,235,093 3,704.32 796 3.5% 932,717
Dharmapuri – 1,784,986 2,245,573 4,656.26 383 2.1% 0
Dindigul – 2,463,597 2,860,765 6,094.29 404 3% 0
Erode – 2,305,168 4,046,367 5,775.2 399 2.8% 0
Kallakurichi – 1,444,931 1,240,245 3,246.28 445 1.7% 0
Kancheepuram – 3,445,448 2,765,004 2,731.78 1,261 4.1% 765,893
Kanniyakumari – 1,883,554 1,364,110 1,732.05 1,087 2.3% 12,979
Karur – 1,249,605 1,950,799 2,908.95 430 1.5% 0
Krishnagiri – 2,077,204 2,661,669 5,027.22 413 2.5% 0
Madurai – 3,669,874 2,386,599 3,714.53 988 4.4% 0
Mayiladuthurai – 1,069,771 746,381 1,174.27 911 1.3% 641,877
Nagapattinam – 736,314 878,497 1,406.98 523 0.9% 655,036
Namakkal – 2,123,913 3,285,494 3,422.79 621 2.6% 0
Perambalur – 579,164 667,020 1,737.71 333 0.7% 0
Pudukkottai – 1,905,832 2,603,393 4,694.53 406 2.3% 74,100
Ramanathapuram – 1,313,257 1,224,540 4,078.9 322 1.6% 433,142
Ranipet – 1,279,523 1,213,354 1,986.78 644 1.5% 0
Salem – 4,011,367 4,669,063 5,250.74 764 4.8% 0
Sivaganga – 1,564,270 1,696,784 4,280.95 365 1.9% 0
Tenkasi – 1,642,650 1,325,088 2,880.86 570 2% 0
Thanjavur – 2,591,203 2,273,378 3,442.48 753 3.1% 100,201
The Nilgiris – 777,088 554,306 2,474.07 314 0.9% 0
Theni – 1,451,029 866,029 2,864.82 506 1.7% 0
Thiruvallur – 4,105,013 3,243,279 3,392.16 1,210 4.9% 792,946
Thiruvarur – 1,469,356 1,322,766 2,285.82 643 1.8% 427,414
Thoothukkudi – 1,638,163 1,717,054 4,769.37 343 2% 490,018
Tiruchirappalli – 3,223,196 2,806,175 4,525.05 712 3.9% 0
Tirunelveli – 1,936,808 1,824,111 3,790.52 511 2.3% 10,115
Tirupathur – 1,362,815 1,251,065 1,947.37 700 1.6% 0
Tiruppur – 3,051,500 4,952,422 5,199.9 587 3.7% 0
Tiruvannamalai – 2,927,131 2,463,143 6,190.91 473 3.5% 0
Vellore – 1,795,020 1,197,610 2,154.83 833 2.2% 0
Viluppuram – 2,635,079 2,319,923 3,992.45 660 3.2% 57,758
Virudhunagar – 2,185,805 1,998,338 4,291.86 509 2.6% 0
05زد

Open exposure layers

Count of H3 resolution-3 cells whose centre falls in the unit and that carry each Natural Earth layer.

Urban areas
1,962.2 H3 cells
بندرگاہیں
None at this resolution
Airports
5 H3 cells
Major roads
1,471 H3 cells
Railways
1,519.2 H3 cells
Rivers and lakes
816.7 H3 cells
06خطرہ

Risk values

Values when released. Subnational risk values for Tamil Nādu publish with the edition from The Global Risks Index. Until then, run a scenario on open data for India.
07Neighbours

Neighbouring units

08ماخذات

Sources, credits and licences

ADM1 boundaries
geoBoundaries (William & Mary geoLab), gbOpen IND ADM1, source: DataMeet India community, Election Commission of India, licence: Creative Commons Attribution 2.5 India (CC BY 2.5 IN) · source · represents 2011
ADM2 boundaries
geoBoundaries (William & Mary geoLab), gbOpen IND ADM2, source: Pathways Data Pvt. Ltd., lgdirectory.gov.in © OpenStreetMap contributors, licence: Open Data Commons Open Database License 1.0 (share-alike: this boundary layer is offered under the same licence) · source · represents 2021. Offered under the same licence (Open Data Commons Open Database License 1.0), kept as its own layer and not merged into other data.
ADM3 boundaries
geoBoundaries (William & Mary geoLab), gbOpen IND ADM3, source: Pathways Data Pvt. Ltd., lgdirectory.gov.in © OpenStreetMap contributors, licence: Open Data Commons Open Database License 1.0 (share-alike: this boundary layer is offered under the same licence) · source · represents 2018. Offered under the same licence (Open Data Commons Open Database License 1.0), kept as its own layer and not merged into other data.
ADM4 boundaries
geoBoundaries (William & Mary geoLab), gbOpen IND ADM4, source: Pathways Data Pvt. Ltd., lgdirectory.gov.in © OpenStreetMap contributors, licence: Open Data Commons Open Database License 1.0 (share-alike: this boundary layer is offered under the same licence) · source · represents 2019. Offered under the same licence (Open Data Commons Open Database License 1.0), kept as its own layer and not merged into other data.
Basemap
OpenFreeMap © OpenMapTiles (CC BY 4.0) · data © OpenStreetMap contributors (ODbL 1.0). Vector tiles requested by the reader’s browser, unmodified; the map falls back to plain land and sea when the host does not answer.
Terrain
Terrain Tiles (Mapzen, AWS Open Data), compiled from SRTM and other public elevation sources (NASA, USGS, ETOPO1, GMTED, EU-DEM under the Copernicus programme, Geoscience Australia, Kartverket, INEGI, LINZ, data.gov.uk). Display relief, not survey data.
People
GHSL 2025 population grid, European Commission Joint Research Centre (CC BY 4.0), shown at 0.05° and summed per unit; WorldPop 2025 (CC BY 4.0) as a second estimate. Units smaller than a grid cell take the density of the cell under them.
ممالک
Natural Earth (public domain).
Elevation
GEBCO Compilation Group (2024) GEBCO 2024 Grid (public domain), reduced to 0.05°: the share of each cell’s land at or below 10 m, weighted by GHSL 2025 people for the low coastal zone.
Position
Boundaries are shown for location only and take no position on any boundary, name or status.