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Sembawang, 
Singapore
878,551 people lived in Sembawang in 2025. It is the 593rd largest of the world's 12,138 cities, and the 2nd largest in Singapore.
Like every city on this site, Sembawang is counted as a built-up area seen from above rather than as a city government's territory. Why that changes the number.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Sembawang grew
Count 10 people in Sembawang in 1975 and the same count gives 42.6 in 2025.
On the UN's projection it will have 914,537 people in 2050. It passed 250,000 people between 1980 and 1985.
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
Sembawang through your family’s years
Put in the years your family were born. You’ll see how many people lived in Sembawang in each of those years, and when each of them turned 30.
Singapore · every city · 2025
Where it is
How to read this: Sembawang is the dot in colour with a ring around it. The grey dots are the other cities of Singapore in 2025, 2 in all, led by Singapore, 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, Sembawang covered 61 km², and buildings, roads and other built-up land covered 14 km² of it. That is 16 m² of built-up land for each person, about a square 4 by 4 metres. Since 1975, its built-up land has grown to 4.1 times its size, and its people are 4.3 times as many.
How to read this: pale is the whole of the city's land; the stronger square inside it is what is actually built on. The three are drawn to the same scale, so a larger square really is more land, and hatching means the year is the UN's projection rather than a count.
Of every 100 people in Singapore
Its share of Singapore
Of every 100 people in Singapore in 2025, 15 lived in Sembawang, which is 878,551 people.
How to read this: 100 squares, one for every 100th person in Singapore; the coloured squares live in Sembawang. The grey rest live in other cities, in towns or in the countryside.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 589 Ufa Russia880,583
- 590 Querétaro Mexico880,361
- 591 Voronezh Russia879,892
- 592 Adelaide Australia879,249
- 593 Sembawang878,551
- 594 Firozabad India878,282
- 595 Saint Petersburg United States877,183
- 596 Chenghai China875,988
- 597 Oslo Norway874,991
In Singapore, 2025
- 84 Singapore4,963,998
- 593 Sembawang878,551
How to read this: names are in order of size, the leading number being each city's rank among all 12,138 in 2025; the bars share a scale within a list. A jump in the ranks means a city under 300,000 people, which is not given a page here.
Apparatus
Sources and method
The figures for Sembawang 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 Sembawang 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