Topics
Constantine, 
Algeria
519,932 people lived in Constantine in 2025. It is the 1063rd largest of the world's 12,138 cities, and the 6th largest in Algeria.
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 Constantine'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 Constantine grew
Count 10 people in Constantine in 1975 and the same count gives 16.2 in 2025.
On the UN's projection it will have 593,941 people in 2050.
projected (after 2025) · how sure the UN is: high moderate low
How to read this: one column every five years, 1975 to 2050; its height is the number of people. Hatched columns are the UN's projection. The thin strip beneath says how sure the UN is of each figure: the stronger the colour, the surer. A blank means the place was not on the UN's list of cities that year.
People · your family's years · 1975 to 2050
Constantine through your family’s years
Put in the years your family were born. You’ll see how many people lived in Constantine 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 Constantine; 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, Constantine covered 93 km², and buildings, roads and other built-up land covered 17 km² of it. That is 33 m² of built-up land for each person, about a square 6 by 6 metres. Since 1975, its built-up land has grown to 3.1 times its size, and its people have grown by 62%.
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 Algeria
Its share of Algeria
Of every 100 people in Algeria in 2025, 1 lived in Constantine, which is 519,932 people.
How to read this: 100 squares stand for everyone in Algeria, one square for every 100th person. Count the coloured ones and you have Constantine's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 1059 Thiès Senegal521,678
- 1060 Shabqadar Pakistan521,259
- 1061 Shahkot Pakistan520,664
- 1062 Liling China520,239
- 1063 Constantine519,932
- 1064 Latur India519,913
- 1065 Liaocheng China519,411
- 1066 Utrecht Netherlands519,200
- 1067 Bhore India518,289
In Algeria, 2025
- 434 Oran1,192,410
- 818 Blida663,070
- 998 Boumerdes550,700
- 1016 Djelfa542,414
- 1063 Constantine519,932
- 1168 Annaba474,367
- 1566 Batna366,415
- 1636 Setif349,825
- 1898 Tlemcen301,980
How to read this: names are in order of size, the leading number being each city's rank among all 12,138 in 2025; the bars share a scale within a list. A jump in the ranks means a city under 300,000 people, which is not given a page here.
Apparatus
Sources and method
The figures for Constantine 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 Constantine 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