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Al `Udayn, 
Yemen
190,661 people lived in Al `Udayn in 2025. It is the 3150th largest of the world's 12,138 cities, and the 14th largest in Yemen.
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 Al `Udayn'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 Al `Udayn grew
For every 10 people in Al `Udayn in 1995, there were 30.8 in 2025.
On the UN's projection it will have 431,713 people in 2050. On the UN's projection it passes 250,000 people between 2030 and 2035. The UN first counts it as a city in 1995, when it passed 50,000 people.
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
Al `Udayn through your family’s years
Put in the years your family were born. You’ll see how many people lived in Al `Udayn 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 Al `Udayn; 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, Al `Udayn covered 11 km², and buildings, roads and other built-up land covered 0.2 km² of it.
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 Yemen
Its share of Yemen
Of every 1,000 people in Yemen in 2025, 5 lived in Al `Udayn, which is 190,661 people.
How to read this: 1,000 squares, one for every 1,000th person in Yemen; the coloured squares live in Al `Udayn. 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
- 3121 Musoma Tanzania192,622
- 3127 Nyunzu Democratic Republic of the Congo192,205
- 3129 Qift Egypt191,964
- 3134 Mocuba Mozambique191,635
- 3150 Al `Udayn190,661
- 3153 Toraghundi Afghanistan190,543
- 3154 Mokolo Cameroon190,418
- 3161 Nabire Indonesia190,211
- 3164 Ibrat Uzbekistan189,898
In Yemen, 2025
- 1886 Yarim304,301
- 2060 Al Majidi282,395
- 2940 Bajil202,715
- 3053 Bayt Sa`dan196,086
- 3150 Al `Udayn190,661
- 3190 Ar Rijad188,715
- 3433 Hayfan176,151
- 3631 Zalmat Hubaysh166,653
- 3800 Ash Shajarah159,506
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 Al `Udayn are the UN's own, at five-year steps: an estimate for each of 1995 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 Al `Udayn 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