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Djelfa, 
Algeria
542,414 people lived in Djelfa in 2025. It is the 1016th largest of the world's 12,138 cities, and the 5th largest in Algeria.
Like every city on this site, Djelfa 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 Djelfa grew
For every 10 people in Djelfa in 1985, there were 95.9 in 2025.
On the UN's projection it will have 704,848 people in 2050. It passed 250,000 people between 2005 and 2010. The UN first counts it as a city in 1985, when it passed 50,000 people.
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
Djelfa through your family’s years
Put in the years your family were born. You’ll see how many people lived in Djelfa in each of those years, and when each of them turned 30.
Algeria · every city · 2025
Where it is
How to read this: Algeria and its 109 cities in 2025, each a dot whose area is its number of people (the largest is Algiers). Djelfa is ringed, in colour; the other cities are grey. Neighbouring countries are outlines.
Area and built-up land · km²
How much land it covers
In 2025, Djelfa covered 40 km², and buildings, roads and other built-up land covered 9.2 km² of it. That is 17 m² of built-up land for each person, about a square 4 by 4 metres. Since 1985, its built-up land has grown to 3.4 times its size, and its people are 9.6 times as many.
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 Djelfa, which is 542,414 people.
How to read this: 100 squares, one for every 100th person in Algeria; the coloured squares live in Djelfa. 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
- 1012 Huazhou China543,709
- 1013 Bulandshahr India543,659
- 1014 Khabarovsk Russia543,422
- 1015 Salt Lake City United States542,449
- 1016 Djelfa542,414
- 1017 Leipzig Germany542,313
- 1018 Xalapa Mexico542,213
- 1019 Durango Mexico541,787
- 1020 Chengtougu China541,451
In Algeria, 2025
- 148 Algiers3,246,400
- 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
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 Djelfa are the UN's own, at five-year steps: an estimate for each of 1985 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 Djelfa 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