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Gaziantep, 
Türkiye
1,613,357 people lived in Gaziantep in 2025. It is the 303rd largest of the world's 12,138 cities, and the 5th largest in Türkiye.
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 Gaziantep grew
Where Gaziantep had 10 people in 1975, it had 74.2 in 2025.
On the UN's projection it will have 1.7 million people in 2050. It passed a million people between 2005 and 2010.
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
Gaziantep through your family’s years
Put in the years your family were born. You’ll see how many people lived in Gaziantep in each of those years, and when each of them turned 30.
Türkiye · every city · 2025
Where it is
How to read this: every dot is one of the 177 cities in Türkiye in 2025, and a dot's area is how many people live there, the biggest being Istanbul. The ringed dot in colour is Gaziantep; 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, Gaziantep covered 134 km², and buildings, roads and other built-up land covered 31 km² of it. That is 19 m² of built-up land for each person, about a square 4 by 4 metres. Since 1975, its built-up land has grown to 3.9 times its size, and its people are 7.4 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 Türkiye
Its share of Türkiye
Of every 100 people in Türkiye in 2025, 2 lived in Gaziantep, which is 1.6 million people.
How to read this: shrink Türkiye to 100 people and this is what you get. The coloured squares are the ones who would live in Gaziantep; the grey ones are everybody else, in other cities, in towns and out in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 299 Campinas Brazil1,631,432
- 300 Wuhu China1,631,043
- 301 Zibo China1,620,676
- 302 San Salvador El Salvador1,615,178
- 303 Gaziantep1,613,357
- 304 Budapest Hungary1,609,260
- 305 Warri Nigeria1,607,702
- 306 Tegucigalpa Honduras1,607,033
- 307 Maharajganj India1,601,258
In Türkiye, 2025
- 18 Istanbul15,014,763
- 129 Ankara3,612,251
- 188 Izmir2,650,237
- 216 Bursa2,281,622
- 303 Gaziantep1,613,357
- 402 Antalya1,273,822
- 448 Sincan1,149,921
- 542 Konya959,484
- 585 Kayseri882,238
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 Gaziantep 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 Gaziantep 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