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Mianyang, 
China
636,781 people lived in Mianyang in 2025. It is the 849th largest of the world's 12,138 cities, and the 147th largest in China.
Like every city on this site, Mianyang 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 Mianyang grew
Count 10 people in Mianyang in 1975 and the same count gives 32 in 2025.
On the UN's projection it will have 524,418 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
Mianyang through your family’s years
Put in the years your family were born. You’ll see how many people lived in Mianyang 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). Mianyang 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, Mianyang covered 111 km², and buildings, roads and other built-up land covered 25 km² of it. That is 40 m² of built-up land for each person, about a square 6 by 6 metres. Since 1975, its built-up land has grown to 6.2 times its size, and its people are 3.2 times as many.
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 Mianyang in 2025 — about 1 in 2,222.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 845 Cancún Mexico637,532
- 846 Jiangyin637,502
- 847 Morelia Mexico637,430
- 848 Jeonju South Korea637,082
- 849 Mianyang636,781
- 850 Kuningan Indonesia636,447
- 851 Long Xuyên Vietnam635,490
- 852 Liaoyang635,212
- 853 Huambo Angola634,669
In China, 2025
- 819 Leiyang662,696
- 831 Zucheng654,599
- 833 Changde651,562
- 846 Jiangyin637,502
- 849 Mianyang636,781
- 852 Liaoyang635,212
- 854 Fangshan633,763
- 857 Yuxi631,209
- 859 Qujing630,828
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 Mianyang 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 Mianyang 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