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Jianhu, 
China
259,681 people lived in Jianhu in 2025. It is the 2248th largest of the world's 12,138 cities, and the 406th largest in China.
Like every city on this site, Jianhu 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 Jianhu grew
For every 10 people in Jianhu in 1975, there were 10.7 in 2025.
On the UN's projection it will have 242,036 people in 2050. It passed 250,000 people between 1975 and 1980.
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
Jianhu through your family’s years
Put in the years your family were born. You’ll see how many people lived in Jianhu in each of those years, and when each of them turned 30.
China · every city · 2025
Where it is
How to read this: China and its 2,082 cities in 2025, each a dot whose area is its number of people (the largest is Shanghai). Jianhu is ringed, in colour; the other cities are grey. Neighbouring countries are outlines.
Area and built-up land · km²
How much land it covers
In 2025, Jianhu covered 41 km², and buildings, roads and other built-up land covered 9.4 km² of it. That is 36 m² of built-up land for each person, about a square 6 by 6 metres. Since 1975, its built-up land has grown to 5.5 times its size, and its people have grown by 7%.
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 China
Its share of China
Fewer than 1 in every 1,000 people in China lived in Jianhu in 2025 — about 1 in 5,556.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 2244 Long Thành Vietnam260,047
- 2245 Khalilabad India259,783
- 2246 Deir Ez Zor Syria259,771
- 2247 Hazel Dell United States259,716
- 2248 Jianhu259,681
- 2249 Paarl South Africa259,665
- 2250 Vidisha India259,638
- 2252 Dundo Angola259,341
- 2253 Nawada India259,262
In China, 2025
- 2130 Sanmenxia272,970
- 2162 Wuqing269,223
- 2187 Yaguang266,899
- 2200 Jining265,293
- 2248 Jianhu259,681
- 2265 Dinghai District257,524
- 2315 Golmud251,353
- 2316 Shehong251,287
- 2318 Jiangyou251,202
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 Jianhu 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 Jianhu 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