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Ibb, 
Yemen
826,974 people lived in Ibb in 2025. It is the 635th largest of the world's 12,138 cities, and the 4th largest in Yemen.
Like every city on this site, Ibb 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 Ibb grew
Count 10 people in Ibb in 1975 and the same count gives 108.6 in 2025.
On the UN's projection it will have 1.3 million people in 2050. On the UN's projection it passes a million people between 2030 and 2035.
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
Ibb through your family’s years
Put in the years your family were born. You’ll see how many people lived in Ibb in each of those years, and when each of them turned 30.
Yemen · every city · 2025
Where it is
How to read this: every dot is one of the 111 cities in Yemen in 2025, and a dot's area is how many people live there, the biggest being Sana'a. The ringed dot in colour is Ibb; 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, Ibb covered 59 km², and buildings, roads and other built-up land covered 5.6 km² of it. That is 7 m² of built-up land for each person, about a square 3 by 3 metres. Since 1975, its built-up land has grown to 4.7 times its size, and its people are 10.9 times as many.
How to read this: pale is the whole of the city's land; the stronger square inside it is what is actually built on. The three are drawn to the same scale, so a larger square really is more land, and hatching means the year is the UN's projection rather than a count.
Of every 100 people in Yemen
Its share of Yemen
Of every 100 people in Yemen in 2025, 2 lived in Ibb, which is 826,974 people.
How to read this: 100 squares, one for every 100th person in Yemen; the coloured squares live in Ibb. The grey rest live in other cities, in towns or in the countryside.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 631 Campo Grande Brazil833,403
- 632 Tirana Albania833,020
- 633 Nsukka Nigeria830,196
- 634 Hodeidah827,012
- 635 Ibb826,974
- 636 Imphal India824,757
- 637 Baoji China823,847
- 638 Ipoh Malaysia823,097
- 639 Huangshi China821,445
In Yemen, 2025
- 111 Sana'a4,018,856
- 311 Ta'izz1,586,739
- 634 Hodeidah827,012
- 635 Ibb826,974
- 754 Bi'r Rubak712,438
- 1045 'Adan530,573
- 1389 Dhamar406,929
- 1462 Hawrah389,641
- 1886 Yarim304,301
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 Ibb 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 Ibb 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