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Sanhe, 
China
282,844 people lived in Sanhe in 2025. It is the 2055th largest of the world's 12,138 cities, and the 380th largest in China.
Like every city on this site, Sanhe 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 Sanhe grew
Where Sanhe had 10 people in 2000, it had 35.1 in 2025.
On the UN's projection it will have 321,762 people in 2050. It passed 250,000 people between 2015 and 2020. The UN first counts it as a city in 2000, 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
Sanhe through your family’s years
Put in the years your family were born. You’ll see how many people lived in Sanhe in each of those years, and when each of them turned 30.
China · every city · 2025
Where it is
How to read this: Sanhe is the dot in colour with a ring around it. The grey dots are the other cities of China in 2025, 2,082 in all, led by Shanghai, 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, Sanhe covered 83 km², and buildings, roads and other built-up land covered 17 km² of it. That is 60 m² of built-up land for each person, about a square 8 by 8 metres. Since 2000, its built-up land has grown to 4.9 times its size, and its people are 3.5 times as many.
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 China
Its share of China
Fewer than 1 in every 1,000 people in China lived in Sanhe in 2025 — about 1 in 5,000.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 2049 Poway United States283,508
- 2050 Koutiala Mali283,496
- 2053 Awka Nigeria283,069
- 2054 Boisar India283,063
- 2055 Sanhe282,844
- 2056 Pemalang Indonesia282,807
- 2057 Ziguinchor Senegal282,751
- 2058 Chía Colombia282,679
- 2059 Kemangkon Indonesia282,463
In China, 2025
- 1990 Bayannur291,787
- 2001 Baicheng290,420
- 2017 Huilai288,590
- 2018 Weinan288,582
- 2055 Sanhe282,844
- 2062 Suizhou282,058
- 2108 Pinggu274,753
- 2117 Xianning274,146
- 2123 Yibin273,660
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 Sanhe are the UN's own, at five-year steps: an estimate for each of 2000 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 Sanhe 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