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Chenghai, 
China
875,988 people lived in Chenghai in 2025. It is the 596th largest of the world's 12,138 cities, and the 88th largest in China.
Like every city on this site, Chenghai 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 Chenghai grew
Where Chenghai had 10 people in 1990, it had 79.1 in 2025.
On the UN's projection it will have 936,805 people in 2050. It passed 250,000 people between 1990 and 1995. The UN first counts it as a city in 1990, when it passed 50,000 people.
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
Chenghai through your family’s years
Put in the years your family were born. You’ll see how many people lived in Chenghai in each of those years, and when each of them turned 30.
China · every city · 2025
Where it is
How to read this: every dot is one of the 2,082 cities in China in 2025, and a dot's area is how many people live there, the biggest being Shanghai. The ringed dot in colour is Chenghai; the grey dots are the rest. The outlines around them are neighbouring countries.
Area and built-up land · km²
How much land it covers
In 2025, Chenghai covered 134 km², and buildings, roads and other built-up land covered 34 km² of it. That is 39 m² of built-up land for each person, about a square 6 by 6 metres. Since 1990, its built-up land has grown to 4.4 times its size, and its people are 7.9 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 China
Its share of China
Of every 1,000 people in China in 2025, 1 lived in Chenghai, which is 875,988 people.
How to read this: 1,000 squares stand for everyone in China, one square for every 1,000th person. Count the coloured ones and you have Chenghai's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 592 Adelaide Australia879,249
- 593 Sembawang Singapore878,551
- 594 Firozabad India878,282
- 595 Saint Petersburg United States877,183
- 596 Chenghai875,988
- 597 Oslo Norway874,991
- 598 Al Ain United Arab Emirates873,839
- 599 Hengyang873,169
- 600 Nowshera Pakistan872,172
In China, 2025
- 564 Xuchang916,553
- 568 Weifang908,584
- 580 Qiqihar892,744
- 587 Huadu882,089
- 596 Chenghai875,988
- 599 Hengyang873,169
- 609 Xinxiang858,975
- 612 Jinzhou854,575
- 614 Haizhou District850,645
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 Chenghai are the UN's own, at five-year steps: an estimate for each of 1990 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 Chenghai 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