Topics
San Antero, 
Colombia
82,494 people lived in San Antero in 1990, the last year the UN lists it as a city. After 1990 it is no longer on the list, and the UN does not say whether it fell below 50,000 people or grew into a neighbouring city.
The UN measures every city in the world the same way, by where the buildings are rather than where the boundary runs, so this figure and San Antero's own can differ widely. What counts as a city here.
Verified 2026-09-30 · 73 canaries
People · every five years · 1975 to 2050
How San Antero grew
For every 10 people in San Antero in 1975, there were 2.5 in 1990: it shrank.
It leaves the UN's list after 1990. The UN's figures for San Antero fall from 329,401 in 1975 to 82,494 in 1990. The UN rates its own confidence in the 1975 figure as moderate: cities are counted from census maps, and where those are old or coarse the figures are least certain.
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
San Antero through your family’s years
Put in the years your family were born. You’ll see how many people lived in San Antero in each of those years, and when each of them turned 30.
Colombia · every city · 2025
Where it is
How to read this: San Antero is the dot in colour with a ring around it, sized as it was in 1990. 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 1990, San Antero covered 7 km², and buildings, roads and other built-up land covered 0.4 km² of it.
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 Colombia
Its share of Colombia
Of every 1,000 people in Colombia in 1990, 3 lived in San Antero, which is 82,494 people.
How to read this: shrink Colombia to 1,000 people and this is what you get. The coloured squares are the ones who would live in San Antero; 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 Colombia, 2025
- 31 Bogotá10,624,315
- 139 Medellín3,350,384
- 184 Cali2,700,232
- 228 Barranquilla2,208,021
- 510 Cartagena1,008,584
- 555 Bucaramanga939,291
- 617 Cúcuta848,408
- 902 Pereira602,831
- 954 Valledupar574,824
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 San Antero are the UN's own, at five-year steps: an estimate for each of 1975 to 1990, 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 San Antero 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