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Thalassery, 
India
1,038,647 people lived in Thalassery in 2025. It is the 493rd largest of the world's 12,138 cities, and the 78th largest in India.
The UN measures every city in the world the same way, by where the buildings are rather than where the boundary runs, so this figure and Thalassery's own can differ widely. What counts as a city here.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Thalassery grew
Count 10 people in Thalassery in 1975 and the same count gives 17.1 in 2025.
On the UN's projection it will have 1.3 million people in 2050. It passed a million people between 1995 and 2000.
projected (after 2025) · how sure the UN is: high moderate low
How to read this: read it left to right, 1975 to 2050, one column every five years, the height being people. Hatching marks the projected years. Below, a strip of the UN's confidence: strong colour where the census maps are recent and detailed, pale where they are not, blank where the place was not counted as a city.
People · your family's years · 1975 to 2050
Thalassery through your family’s years
Put in the years your family were born. You’ll see how many people lived in Thalassery in each of those years, and when each of them turned 30.
India · every city · 2025
Where it is
How to read this: Thalassery is the dot in colour with a ring around it. The grey dots are the other cities of India in 2025, 2,054 in all, led by New Delhi, each drawn with an area that matches its people. Countries next door are outlines only.
Area and built-up land · km²
How much land it covers
In 2025, Thalassery covered 209 km², and buildings, roads and other built-up land covered 15 km² of it. That is 14 m² of built-up land for each person, about a square 4 by 4 metres. Since 1975, its built-up land has grown to 4.7 times its size, and its people have grown by 71%.
How to read this: each pale square is the city's whole area, the strong square inside it the part that is built on; one scale for all three, so a bigger square is more land. Hatched is the UN's projection.
Of every 100 people in India
Its share of India
Of every 1,000 people in India in 2025, 1 lived in Thalassery, which is 1.0 million people.
How to read this: 1,000 squares stand for everyone in India, one square for every 1,000th person. Count the coloured ones and you have Thalassery's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 489 Tuen Mun Hong Kong1,053,083
- 490 Kottayam1,043,314
- 491 Sarvestan Iran1,039,168
- 492 Barharia1,038,927
- 493 Thalassery1,038,647
- 494 Gaza Palestine1,038,285
- 495 Mendoza Argentina1,027,849
- 496 Santos Brazil1,027,752
- 497 Quetta Pakistan1,025,211
In India, 2025
- 465 Berhampore1,109,144
- 468 Solapur1,102,702
- 490 Kottayam1,043,314
- 492 Barharia1,038,927
- 493 Thalassery1,038,647
- 511 Malda1,001,322
- 513 Puducherry998,290
- 516 Mangaluru993,566
- 519 Gaya991,081
How to read this: the figure in front of a name is where that city stands among the 12,138 cities the UN counted in 2025, and each bar is its people, on one scale per list. Numbers are missing where a city has fewer than 300,000 people and so has no page of its own.
Apparatus
Sources and method
The figures for Thalassery are the UN's own, at five-year steps: an estimate for each of 1975 to 2025, then projection to 2050. Projected years are drawn hatched, and the UN publishes no range of uncertainty for a city. What a city means here, how the UN measures one, and why that number can differ from the one Thalassery publishes about itself: how the figures here are put together.
Sources: UN WUP 2025 · Natural Earth · flag-icons. Every source, its licence and how to cite it →
Verified 2026-09-30 · 73 canaries