Topics
Koléa, 
Algeria
274,748 people lived in Koléa in 2025. It is the 2109th largest of the world's 12,138 cities, and the 12th largest in Algeria.
This is the UN's built-up area, drawn from satellite pictures and census maps rather than from the city limits, and the two can be a long way apart. The rule behind it.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Koléa grew
Count 10 people in Koléa in 1990 and the same count gives 42.6 in 2025.
On the UN's projection it will have 316,751 people in 2050. It passed 250,000 people between 2020 and 2025. The UN first counts it as a city in 1990, 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
Koléa through your family’s years
Put in the years your family were born. You’ll see how many people lived in Koléa in each of those years, and when each of them turned 30.
Algeria · every city · 2025
Where it is
How to read this: every dot is one of the 109 cities in Algeria in 2025, and a dot's area is how many people live there, the biggest being Algiers. The ringed dot in colour is Koléa; 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, Koléa covered 69 km², and buildings, roads and other built-up land covered 12 km² of it. That is 45 m² of built-up land for each person, about a square 7 by 7 metres. Since 1990, its built-up land has grown to 5.6 times its size, and its people are 4.3 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 Algeria
Its share of Algeria
Of every 1,000 people in Algeria in 2025, 6 lived in Koléa, which is 274,748 people.
How to read this: 1,000 squares, one for every 1,000th person in Algeria; the coloured squares live in Koléa. 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
- 2105 Erin Woods Canada275,476
- 2106 Glenfield New Zealand275,322
- 2107 Morbi India275,191
- 2108 Pinggu China274,753
- 2109 Koléa274,748
- 2110 Ambato Ecuador274,672
- 2111 Pucallpa Peru274,639
- 2112 Reading United Kingdom274,632
- 2113 San Salvador de Jujuy Argentina274,625
In Algeria, 2025
- 1566 Batna366,415
- 1636 Setif349,825
- 1898 Tlemcen301,980
- 1912 Biskra300,313
- 2109 Koléa274,748
- 2197 El Oued265,408
- 2235 Sidi Bel Abbes261,103
- 2288 Skikda255,379
- 2313 Tiaret251,576
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 Koléa are the UN's own, at five-year steps: an estimate for each of 1990 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 Koléa 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