Topics
Bonn, 
Germany
756,044 people lived in Bonn in 2025. It is the 708th largest of the world's 12,138 cities, and the 9th largest in Germany.
That figure counts the whole built-up area, not the area Bonn 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 Bonn grew
For every 10 people in Bonn in 1975, there were 12.6 in 2025.
On the UN's projection it will have 708,927 people in 2050.
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
Bonn through your family’s years
Put in the years your family were born. You’ll see how many people lived in Bonn in each of those years, and when each of them turned 30.
Germany · every city · 2025
Where it is
How to read this: every dot is one of the 100 cities in Germany in 2025, and a dot's area is how many people live there, the biggest being Berlin. The ringed dot in colour is Bonn; 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, Bonn covered 271 km², and buildings, roads and other built-up land covered 56 km² of it. That is 74 m² of built-up land for each person, about a square 9 by 9 metres. Since 1975, its built-up land has grown by 68%, and its people have grown by 26%.
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 Germany
Its share of Germany
Of every 1,000 people in Germany in 2025, 9 lived in Bonn, which is 756,044 people.
How to read this: shrink Germany to 1,000 people and this is what you get. The coloured squares are the ones who would live in Bonn; the grey ones are everybody else, in other cities, in towns and out in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 704 Kalemie Democratic Republic of the Congo758,379
- 705 Yola Nigeria758,153
- 706 Taxila Pakistan757,451
- 707 Xinyu China756,365
- 708 Bonn756,044
- 709 Rajshahi Bangladesh755,347
- 710 Malabo Equatorial Guinea754,834
- 711 Xingtai China754,483
- 712 Kalaburagi India753,963
In Germany, 2025
- 459 Cologne1,125,292
- 570 Dusseldorf907,386
- 573 Frankfurt900,483
- 576 Stuttgart899,103
- 708 Bonn756,044
- 717 Dortmund748,106
- 820 Wuppertal662,663
- 837 Nuremberg644,169
- 887 Hanover611,288
How to read this: the figure in front of a name is where that city stands among the 12,138 cities the UN counted in 2025, and each bar is its people, on one scale per list. Numbers are missing where a city has fewer than 300,000 people and so has no page of its own.
Apparatus
Sources and method
The figures for Bonn 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 Bonn 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