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Chía, 
Colombia
282,679 people lived in Chía in 2025. It is the 2058th largest of the world's 12,138 cities, and the 20th largest in Colombia.
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 Chía grew
Count 10 people in Chía in 2000 and the same count gives 52 in 2025.
On the UN's projection it will have 397,147 people in 2050. It passed 250,000 people between 2020 and 2025. The UN first counts it as a city in 2000, when it passed 50,000 people.
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
Chía through your family’s years
Put in the years your family were born. You’ll see how many people lived in Chía in each of those years, and when each of them turned 30.
Colombia · every city · 2025
Where it is
How to read this: Chía is the dot in colour with a ring around it. The grey dots are the other cities of Colombia in 2025, 81 in all, led by Bogotá, 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, Chía covered 58 km², and buildings, roads and other built-up land covered 15 km² of it. That is 51 m² of built-up land for each person, about a square 7 by 7 metres. Since 2000, its built-up land has grown to 4 times its size, and its people are 5.2 times as many.
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 Colombia
Its share of Colombia
Of every 1,000 people in Colombia in 2025, 5 lived in Chía, which is 282,679 people.
How to read this: 1,000 squares, one for every 1,000th person in Colombia; the coloured squares live in Chía. 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
- 2054 Boisar India283,063
- 2055 Sanhe China282,844
- 2056 Pemalang Indonesia282,807
- 2057 Ziguinchor Senegal282,751
- 2058 Chía282,679
- 2059 Kemangkon Indonesia282,463
- 2060 Al Majidi Yemen282,395
- 2061 Hamamatsu Japan282,084
- 2062 Suizhou China282,058
In Colombia, 2025
How to read this: the figure in front of a name is where that city stands among the 12,138 cities the UN counted in 2025, and each bar is its people, on one scale per list. Numbers are missing where a city has fewer than 300,000 people and so has no page of its own.
Apparatus
Sources and method
The figures for Chía are the UN's own, at five-year steps: an estimate for each of 2000 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 Chía 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