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Tongzhou, 
China
315,167 people lived in Tongzhou in 2025. It is the 1821st largest of the world's 12,138 cities, and the 335th largest in China.
That figure counts the whole built-up area, not the area Tongzhou 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 Tongzhou grew
Count 10 people in Tongzhou in 1975 and the same count gives 61 in 2025.
On the UN's projection it will have 287,926 people in 2050. It passed 250,000 people between 2015 and 2020.
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
Tongzhou through your family’s years
Put in the years your family were born. You’ll see how many people lived in Tongzhou 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). Tongzhou 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, Tongzhou covered 83 km², and buildings, roads and other built-up land covered 19 km² of it. That is 62 m² of built-up land for each person, about a square 8 by 8 metres. Since 1975, its built-up land has grown to 14.9 times its size, and its people are 6.1 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 Tongzhou in 2025 — about 1 in 4,545.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 1817 Udupi India315,743
- 1818 Sapele Nigeria315,614
- 1819 Pathankot India315,476
- 1820 Miluo315,273
- 1821 Tongzhou315,167
- 1822 Safadasht Iran315,054
- 1823 Wanlaweyn Somalia314,824
- 1824 Nankang314,564
- 1825 Ningde314,107
In China, 2025
- 1803 Zhangqiu319,153
- 1805 Qili318,490
- 1815 Guiping315,905
- 1820 Miluo315,273
- 1821 Tongzhou315,167
- 1824 Nankang314,564
- 1825 Ningde314,107
- 1827 Hezhou313,994
- 1829 Raoping313,705
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 Tongzhou 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 Tongzhou 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