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Bonny, 
Nigeria
335,542 people lived in Bonny in 2025. It is the 1708th largest of the world's 12,138 cities, and the 62nd largest in Nigeria.
The UN measures every city in the world the same way, by where the buildings are rather than where the boundary runs, so this figure and Bonny's own can differ widely. What counts as a city here.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Bonny grew
Count 10 people in Bonny in 1975 and the same count gives 37.8 in 2025.
On the UN's projection it will have 566,344 people in 2050. It passed 250,000 people between 2010 and 2015.
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
Bonny through your family’s years
Put in the years your family were born. You’ll see how many people lived in Bonny in each of those years, and when each of them turned 30.
Nigeria · every city · 2025
Where it is
How to read this: every dot is one of the 457 cities in Nigeria in 2025, and a dot's area is how many people live there, the biggest being Lagos. The ringed dot in colour is Bonny; 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, Bonny covered 50 km², and buildings, roads and other built-up land covered 5.6 km² of it. That is 17 m² of built-up land for each person, about a square 4 by 4 metres. Since 1975, its built-up land has grown to 4 times its size, and its people are 3.8 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 Nigeria
Its share of Nigeria
Of every 1,000 people in Nigeria in 2025, 1 lived in Bonny, which is 335,542 people.
How to read this: shrink Nigeria to 1,000 people and this is what you get. The coloured squares are the ones who would live in Bonny; 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
- 1704 Garawan Egypt335,801
- 1705 Sri Ganganagar India335,747
- 1706 Duri Indonesia335,728
- 1707 Indramayu Indonesia335,572
- 1708 Bonny335,542
- 1709 Changyi China335,538
- 1710 Mansa Zambia335,503
- 1711 Jaranwala Pakistan335,463
- 1712 Agadez Niger335,322
In Nigeria, 2025
- 1535 Oyigbo371,913
- 1543 Daura369,916
- 1556 Gboko367,407
- 1690 Ikere-Ekiti338,367
- 1708 Bonny335,542
- 1721 Gwagwalada333,464
- 1736 Ikare330,941
- 1737 Erin-osun330,484
- 1818 Sapele315,614
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 Bonny 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 Bonny 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