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Tuen Mun, 
Hong Kong
1,053,083 people lived in Tuen Mun in 2025. It is the 489th largest of the world's 12,138 cities, and the 2nd largest in Hong Kong.
That figure counts the whole built-up area, not the area Tuen Mun governs, so it may be far from the number the city publishes about itself. How the UN measures a city.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Tuen Mun grew
Where Tuen Mun had 10 people in 1975, it had 17.5 in 2025.
On the UN's projection it will have 877,958 people in 2050. It passed a million people between 2005 and 2010.
projected (after 2025) · how sure the UN is: high moderate low
How to read this: each column is one of the UN's five-yearly estimates, 1975 through 2050, and taller means more people. Where a column is hatched the year has not happened yet. The strip under the columns is the UN's own confidence in each figure, palest where it is least sure; where it is blank the city was not on the list at all.
People · your family's years · 1975 to 2050
Tuen Mun through your family’s years
Put in the years your family were born. You’ll see how many people lived in Tuen Mun in each of those years, and when each of them turned 30.
Hong Kong · every city · 2025
Where it is
How to read this: Tuen Mun is the dot in colour with a ring around it. The grey dots are the other cities of Hong Kong in 2025, 6 in all, led by Hong Kong, 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, Tuen Mun covered 93 km², and buildings, roads and other built-up land covered 21 km² of it. That is 20 m² of built-up land for each person, about a square 4 by 4 metres. Since 1975, its built-up land has grown to 4.9 times its size, and its people have grown by 75%.
How to read this: the outer pale square stands for all the land the city covers, and the solid square inside it for the part with buildings, roads and the like on it. All three squares share a scale, so you can compare them by eye. A hatched one is a year the UN has projected.
Of every 100 people in Hong Kong
Its share of Hong Kong
Of every 100 people in Hong Kong in 2025, 14 lived in Tuen Mun, which is 1.1 million people.
How to read this: shrink Hong Kong to 100 people and this is what you get. The coloured squares are the ones who would live in Tuen Mun; the grey ones are everybody else, in other cities, in towns and out in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 485 Bangui Central African Republic1,056,949
- 486 Al Hillah Iraq1,055,267
- 487 Tshikapa Democratic Republic of the Congo1,054,686
- 488 Kutubdia Bangladesh1,053,339
- 489 Tuen Mun1,053,083
- 490 Kottayam India1,043,314
- 491 Sarvestan Iran1,039,168
- 492 Barharia India1,038,927
- 493 Thalassery India1,038,647
In Hong Kong, 2025
How to read this: the number before each name is its place among all 12,138 cities in the world in 2025; bars are people, on one scale per list. Only cities that reach 300,000 people have a page here, so a gap in the numbers is a smaller city.
Apparatus
Sources and method
The figures for Tuen Mun 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 Tuen Mun 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