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Antofagasta, 
Chile
385,812 people lived in Antofagasta in 2025. It is the 1474th largest of the world's 12,138 cities, and the 5th largest in Chile.
That figure counts the whole built-up area, not the area Antofagasta 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 Antofagasta grew
For every 10 people in Antofagasta in 1975, there were 24.1 in 2025.
On the UN's projection it will have 406,593 people in 2050. It passed 250,000 people between 1995 and 2000.
projected (after 2025) · how sure the UN is: high moderate low
How to read this: each column is one of the UN's five-yearly estimates, 1975 through 2050, and taller means more people. Where a column is hatched the year has not happened yet. The strip under the columns is the UN's own confidence in each figure, palest where it is least sure; where it is blank the city was not on the list at all.
People · your family's years · 1975 to 2050
Antofagasta through your family’s years
Put in the years your family were born. You’ll see how many people lived in Antofagasta in each of those years, and when each of them turned 30.
Chile · every city · 2025
Where it is
How to read this: Antofagasta is the dot in colour with a ring around it. The grey dots are the other cities of Chile in 2025, 36 in all, led by Santiago, each drawn with an area that matches its people. Countries next door are outlines only.
Area and built-up land · km²
How much land it covers
In 2025, Antofagasta covered 56 km², and buildings, roads and other built-up land covered 11 km² of it. That is 30 m² of built-up land for each person, about a square 5 by 5 metres. Since 1975, its built-up land has grown to 3.9 times its size, and its people are 2.4 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 Chile
Its share of Chile
Of every 100 people in Chile in 2025, 2 lived in Antofagasta, which is 385,812 people.
How to read this: 100 squares stand for everyone in Chile, one square for every 100th person. Count the coloured ones and you have Antofagasta's share; the grey remainder live somewhere else in the country.
Ranked by people · 2025
Cities of a similar size
In the world, 2025
- 1470 Ganja Azerbaijan386,822
- 1471 Malemba-Nkulu Democratic Republic of the Congo386,790
- 1472 Changping China386,664
- 1473 Bournemouth United Kingdom386,557
- 1474 Antofagasta385,812
- 1475 Pittsburgh United States385,498
- 1476 Yongkang China385,247
- 1477 Fuqing China385,081
- 1478 Gdansk Poland384,985
In Chile, 2025
- 58 Santiago6,726,045
- 607 Valparaíso861,145
- 1075 Concepción516,741
- 1174 La Serena473,325
- 1474 Antofagasta385,812
- 1626 Temuco352,200
- 1816 Iquique315,904
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 Antofagasta 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 Antofagasta 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