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Compare · UN World Population Prospects 2024
Colombia and 
Thailand, side by side
Colombia in 2026: half the people are older than 34. Thailand: half are older than 42.
UN estimates for mid-2023: Colombia 52,321,152 people · Thailand 71,702,435
How to read this: each pyramid stacks a place’s people by age — babies at the bottom, the oldest at the top, men on the left and women on the right. A wide bottom means many children; a wide top means many older people.
Each bar is a share of its own place’s people, so a small country and a large one can be read side by side.
men women projected
COL × THA · 2026 · age groups
If each place were 100 people
Shrink each population to 100 people and count them. Dots are children under 15, filled squares are people aged 15 to 64, and open squares are people 65 and over. The picture follows the year slider above.
- Children, under 15
- 20
- Aged 15 to 64
- 69
- Aged 65 and over
- 11
- Children, under 15
- 14
- Aged 15 to 64
- 69
- Aged 65 and over
- 17
COL × THA · families and lifetimes
Children, and how long lives last
At today's rates, a woman in Colombia would have about 1.6 children in her lifetime. In Thailand, about 1.2. A baby born in Colombia this year can expect to live about 78 years. In Thailand, about 77.
Children per woman, 2026
Each figure is one child: how many children a woman would have in her lifetime at that year’s rates.
The dashed line at 2.1 is about what it takes for each generation to replace the one before it, leaving migration aside.
How long a newborn can expect to live, 2026
Each block is ten years of life, if the death rates of that year stayed the same all life long.
Hatched marks are UN projections (medium variant), not measurements.
COL × THA · 1950–2100 · how many
How big, and where they are heading
Thailand has about 30% more people than Colombia: 71.6 million against 53.9 million.
Since 1950 the two have moved differently: Colombia's population is 4.6 times what it was in 1950, while Thailand's population is 3.5 times what it was in 1950.
Colombia's population is expected to peak in 2050. Meanwhile Thailand's population peaked in 2022. The UN expects Colombia to have more people than Thailand from 2072. In 2100: 47.1 million in Colombia, 45.6 million in Thailand (UN projection, medium).
Show the numbers
| Year | Colombia: people | Thailand: people | Colombia: half older than | Thailand: half older than | Colombia: children per woman | Thailand: children per woman | Colombia: life expectancy | Thailand: life expectancy |
|---|---|---|---|---|---|---|---|---|
| 1950 | 11.7670 million | 20.4284 million | 17.9 | 18.5 | 6.41 | 6.36 | 48.3 | 45.2 |
| 1960 | 15.6062 million | 26.8517 million | 16.5 | 17.9 | 6.74 | 6.33 | 56.6 | 50.6 |
| 1970 | 20.8118 million | 35.9544 million | 16.7 | 17.3 | 5.28 | 5.45 | 61.5 | 56.5 |
| 1980 | 26.1045 million | 45.6500 million | 18.9 | 19.9 | 3.80 | 3.29 | 66.7 | 62.2 |
| 1990 | 32.4401 million | 54.7383 million | 21.8 | 24.2 | 3.00 | 2.06 | 68.7 | 68.9 |
| 2000 | 39.0899 million | 63.0078 million | 24.2 | 30.0 | 2.57 | 1.73 | 70.9 | 71.2 |
| 2010 | 44.7773 million | 68.5794 million | 27.5 | 34.5 | 2.01 | 1.56 | 74.9 | 75.0 |
| 2023 | 52.3212 million | 71.7024 million | 32.6 | 40.7 | 1.65 | 1.21 | 77.7 | 76.4 |
| 2030* | 55.7365 million | 71.2150 million | 35.8 | 43.6 | 1.58 | 1.20 | 79.0 | 77.9 |
| 2040* | 58.5765 million | 69.5350 million | 40.5 | 47.0 | 1.57 | 1.25 | 80.8 | 79.9 |
| 2050* | 59.3854 million | 66.3827 million | 44.7 | 49.6 | 1.58 | 1.29 | 82.4 | 81.7 |
| 2060* | 58.8334 million | 61.9770 million | 47.8 | 51.5 | 1.58 | 1.33 | 84.0 | 83.3 |
| 2070* | 57.1285 million | 57.4162 million | 50.0 | 53.0 | 1.59 | 1.37 | 85.3 | 84.7 |
| 2080* | 54.2680 million | 53.1630 million | 51.8 | 53.0 | 1.59 | 1.40 | 86.6 | 86.0 |
| 2090* | 50.6745 million | 49.1948 million | 52.5 | 52.9 | 1.60 | 1.42 | 87.8 | 87.2 |
| 2100* | 47.0808 million | 45.5551 million | 52.8 | 52.9 | 1.60 | 1.44 | 88.9 | 88.4 |
* UN projection, medium variant. People at mid-year; ages and life expectancy in years.
COL − THA · 1950–2100 · every age
Which ages each place has more of
Each column is a year and each row an age, from babies at the bottom to 100 at the top. The shade of a cell shows which place has more of its people at that age — the key beside the picture tells you which shade is Colombia and which is Thailand, and the in-between shade means the same. Because it compares shares, a small place and a large one can be compared fairly.
236 countries · 1950–2100
Where they sit among all countries
Every country in the world, every year from 1950 to 2100. The grey cloud shows where most countries are; Colombia is drawn in solid blue squares and Thailand in open orange squares, so you can see whether each is ahead of the crowd, behind it or in the middle.
More comparisons
Keep exploring
Each place on its own: Colombia · Thailand. Or pick any two places with the boxes at the top of this page.
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Apparatus
Sources and method
Every figure for Colombia and Thailand is the United Nations Population Division's, from World Population Prospects 2024: counted to 2023, and the medium projection for each year after that. Both places are taken from the same release and the same tables, which is what makes them comparable at all.
The working behind the median age, the rounding in the “100 people” pictures and the reason the regions are kept out of the all-country views are all set out in the method.
There are 250 ready-made comparisons on this site. For anything else, name two places in the boxes at the top of the page.
Sources: UN WPP 2024 · flag-icons. Every source, its licence and how to cite it →
Verified 2026-09-30 · 73 canaries