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1,206-CITY ATLASSOURCE-BACKED CITY REFERENCE

India

Chennai

Compare this sourced profile of Chennai, India before planning. Stable fields identify the place; confirm current transport, access and opening details with official sources.

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Abstract regional map illustration accompanying the Chennai city reference
AI-generated regional editorial illustration — not a photograph or a view of Chennai.

01What the data says — and does not say

What the data says — and does not say

This page separates the checked GeoNames row for Chennai—4,681,087, Asia/Kolkata, and source coordinates—from live travel claims. Those fields identify and compare the record; they do not prove current transport, accessibility, census totals, or a City Atlas Club visit.

Wikidata's localized description: city and state capital of Tamil Nadu, India.

02This city's dataset fingerprint

This city's dataset fingerprint

Source identity and administrative path

The source row behind Chennai is GeoNames ID 1264527. Its recorded administrative path is Chennai → Tamil Nadu → India, and GeoNames classifies the place as a first-order administrative seat. Chennai occurs once as a primary city label in this atlas sample; the numeric ID remains the durable source key if names change. The city row itself was updated 2024-09-05; that date belongs to the source record, not to every transport or visitor detail in the real destination.

Population position inside fixed cohorts

Within the fixed 1,206-record atlas, Chennai ranks 66 by recorded population. Inside the 109 selected India entries it ranks 6; inside the 632 entries in its broad region it ranks 41. Its 4,681,087 population value is 4.67 times the 1,001,694 median for the country cohort and 4.64 times the 1,008,426 regional median. Chennai falls inside the leading tenth of this atlas's India population cohort. Chennai's recorded value reaches at least twice the country-cohort median in this snapshot. These comparisons describe this selected dataset only; they are not current census rankings or official urban-area boundaries.

Nearest-reference pattern

Chennai's three nearest other atlas coordinates are Vellore at 125.574 km with 484,690 recorded people; Pondicherry at 137.255 km with 657,209 recorded people; Nellore at 154.694 km with 547,621 recorded people. The closest-to-farthest distance spread is 29.12 km. Compared with Vellore, Chennai's recorded population is 9.66 times as large. Against Chennai, Vellore follows Vellore → Tamil Nadu → India in the source. Its point has lower latitude and lower longitude; it belongs to the same selected India cohort, uses the shared Asia/Kolkata identifier, and carries populated place rather than first-order administrative seat. Its recorded population is below Chennai's. Against Chennai, Pondicherry follows Puducherry → India in the source. Its point has lower latitude and lower longitude; it belongs to the same selected India cohort, uses the shared Asia/Kolkata identifier, and carries the same first-order administrative seat class. Its recorded population is below Chennai's. Against Chennai, Nellore follows Nellore → Andhra Pradesh → India in the source. Its point has higher latitude and lower longitude; it belongs to the same selected India cohort, uses the shared Asia/Kolkata identifier, and carries second-order administrative seat rather than first-order administrative seat. Its recorded population is below Chennai's. Its nearest-neighbor distance ranks 801 of 1,206 from shortest to longest in the same snapshot. Chennai's nearest-coordinate gap belongs to the wider half of atlas distances. This pattern can reveal whether other catalog references are geographically close, but it cannot establish whether a border crossing is possible or practical, or whether rail, road, fare, or journey-time connections exist. Read as one record signature, GeoNames 1264527, the coordinate pair 13.0878 / 80.2785, country rank 6 of 109, and neighbor GeoNames 1253286 at 125.574 km bind Chennai to a reproducible comparison. That combined key distinguishes the row; it is not a recommendation or evidence of a physical connection.

Coordinate, time-zone and class cohorts

Chennai's reference point is 13.0878° north and 80.2785° east. The IANA identifier Asia/Kolkata is shared by 109 city rows in this catalog, while the GeoNames class PPLA is shared by 429 rows. Chennai's row carries both second- and first-order administrative labels. Chennai's point falls in the near-equatorial coordinate band used by this atlas's row checks. Chennai's time-zone field defines the narrower catalog cohort; its place class is shared more broadly. GeoNames supplies no elevation for Chennai, so the profile preserves that missing value instead of guessing terrain. Together these fields form a reproducible identity check for this page, not a claim about walkability, climate or accessibility.

Record keys
Chennai · GeoNames 1264527 · Q1352
Name scope
Chennai · 1 atlas row share this source label · qualifier not required
Administrative chain
Chennai · Tamil Nadu · India
Coordinate signature
13.0878° N · 80.2785° E
Population snapshot
4,681,087 · atlas rank 66 of 1,206
Country comparison
India rank 6 of 109 · median 1,001,694 · ratio 4.67×
Regional comparison
Asia rank 41 of 632 · median 1,008,426 · ratio 4.64×
Time-zone cohort
Asia/Kolkata · 109 of 1,206 atlas rows
Place-class cohort
PPLA first-order administrative seat · 429 of 1,206 rows
Elevation field
Chennai · missing in GeoNames
Nearest reference
Vellore · 125.574 km · population 484,690 · atlas rank 1,183
Second reference
Pondicherry · 137.255 km · population 657,209 · atlas rank 843
Third reference
Nellore · 154.694 km · population 547,621 · atlas rank 1,023
Neighbour geometry
Chennai · nearest-distance rank 801 of 1,206 · three-reference spread 29.12 km
Source dates
Chennai row updated 2024-09-05 · atlas dataset checked 2026-08-04