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Rosario, 
Argentina
1,151,717 people lived in Rosario in 2025. It is the 445th largest of the world's 12,138 cities, and the 3rd largest in Argentina.
That figure counts the whole built-up area, not the area Rosario governs, so it may be far from the number the city publishes about itself. How the UN measures a city.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How Rosario grew
Count 10 people in Rosario in 1975 and the same count gives 16.3 in 2025.
On the UN's projection it will have 1.2 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: 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
Rosario through your family’s years
Put in the years your family were born. You’ll see how many people lived in Rosario in each of those years, and when each of them turned 30.
Argentina · every city · 2025
Where it is
How to read this: Argentina and its 77 cities in 2025, each a dot whose area is its number of people (the largest is Buenos Aires). Rosario 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, Rosario covered 199 km², and buildings, roads and other built-up land covered 59 km² of it. That is 51 m² of built-up land for each person, about a square 7 by 7 metres. Since 1975, its built-up land has grown by 76%, and its people have grown by 63%.
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 Argentina
Its share of Argentina
Of every 100 people in Argentina in 2025, 3 lived in Rosario, which is 1.2 million people.
How to read this: 100 squares stand for everyone in Argentina, one square for every 100th person. Count the coloured ones and you have Rosario's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 441 Serrekunda Gambia1,156,903
- 442 El Mahalla El Kubra Egypt1,156,501
- 443 Jammu India1,154,466
- 444 Kirkuk Iraq1,153,160
- 445 Rosario1,151,717
- 446 Touba Senegal1,151,552
- 447 Turin Italy1,150,975
- 448 Sincan Türkiye1,149,921
- 449 Yekaterinburg Russia1,148,237
In Argentina, 2025
- 21 Buenos Aires14,017,736
- 346 Cordoba1,460,491
- 445 Rosario1,151,717
- 495 Mendoza1,027,849
- 541 San Miguel de Tucumán959,565
- 720 La Plata742,952
- 879 Mar del Plata614,979
- 881 Salta613,956
- 1198 San Juan464,466
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 Rosario 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 Rosario 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