Topics
Compare · UN World Population Prospects 2024
Argentina and 
Brazil, side by side
In 2026, half of the people in Argentina are older than 34. In Brazil, half are older than 36.
UN estimates for mid-2023: Argentina 45,538,401 people · Brazil 211,140,729
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
ARG × BRA · 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
- 67
- Aged 65 and over
- 13
- Children, under 15
- 19
- Aged 15 to 64
- 69
- Aged 65 and over
- 12
ARG × BRA · families and lifetimes
Children, and how long lives last
At today's rates, a woman in Argentina would have about 1.5 children in her lifetime. In Brazil, about 1.6. Life expectancy at birth this year: about 78 years in Argentina, about 76 in Brazil.
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.
ARG × BRA · 1950–2100 · how many
How big, and where they are heading
Brazil is the larger of the two, with about 5 times as many people as Argentina: 214 million to 46.0 million.
Argentina's population is 2.7 times what it was in 1950; Brazil's population is 4.0 times what it was in 1950.
Looking ahead: Argentina's population is expected to peak in 2050, and Brazil's population is expected to peak in 2042. In 2100: 38.3 million in Argentina, 163 million in Brazil (UN projection, medium).
Show the numbers
| Year | Argentina: people | Brazil: people | Argentina: half older than | Brazil: half older than | Argentina: children per woman | Brazil: children per woman | Argentina: life expectancy | Brazil: life expectancy |
|---|---|---|---|---|---|---|---|---|
| 1950 | 17.0180 million | 53.4085 million | 25.4 | 18.5 | 3.16 | 6.12 | 61.3 | 48.5 |
| 1960 | 20.3861 million | 72.3881 million | 26.5 | 17.9 | 3.14 | 6.05 | 64.2 | 53.2 |
| 1970 | 23.8783 million | 95.3756 million | 26.9 | 18.3 | 3.08 | 4.93 | 65.7 | 57.3 |
| 1980 | 28.0116 million | 121.207 million | 27.0 | 20.2 | 3.30 | 4.04 | 68.6 | 61.8 |
| 1990 | 32.7559 million | 149.143 million | 27.3 | 22.4 | 3.03 | 2.90 | 71.6 | 65.9 |
| 2000 | 37.2140 million | 174.018 million | 27.8 | 25.2 | 2.59 | 2.25 | 73.9 | 69.6 |
| 2010 | 41.2887 million | 193.702 million | 29.9 | 29.2 | 2.41 | 1.79 | 75.7 | 73.8 |
| 2023 | 45.5384 million | 211.141 million | 33.1 | 34.9 | 1.50 | 1.62 | 77.4 | 75.8 |
| 2030* | 46.5850 million | 216.074 million | 35.9 | 37.9 | 1.51 | 1.58 | 78.4 | 77.1 |
| 2040* | 47.8176 million | 219.237 million | 39.5 | 41.8 | 1.52 | 1.57 | 79.9 | 78.7 |
| 2050* | 48.3089 million | 217.489 million | 42.9 | 44.9 | 1.54 | 1.56 | 81.4 | 80.3 |
| 2060* | 47.6387 million | 211.039 million | 46.7 | 47.3 | 1.55 | 1.56 | 82.8 | 81.8 |
| 2070* | 46.1005 million | 200.893 million | 50.1 | 49.3 | 1.56 | 1.57 | 84.2 | 83.2 |
| 2080* | 43.9762 million | 188.599 million | 50.7 | 50.3 | 1.57 | 1.57 | 85.4 | 84.5 |
| 2090* | 41.2550 million | 175.781 million | 51.7 | 51.0 | 1.57 | 1.58 | 86.6 | 85.7 |
| 2100* | 38.2560 million | 163.364 million | 52.7 | 51.7 | 1.58 | 1.58 | 87.7 | 86.8 |
* UN projection, medium variant. People at mid-year; ages and life expectancy in years.
ARG − BRA · 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 Argentina and which is Brazil, 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; Argentina is drawn in solid blue squares and Brazil 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: Argentina · Brazil. Or pick any two places with the boxes at the top of this page.
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Apparatus
Sources and method
Both sides of this comparison come from the UN Population Division's World Population Prospects 2024 — the same release, the same tables, counted to 2023 and projected beyond it on the medium variant. That shared origin is what a comparison rests on.
How the median age and the “100 people” pictures are worked out, and why the pictures of every country leave the regions out: how the figures here are put together.
250 comparisons have a page of their own; any other two places can be compared from the boxes at the top.
Sources: UN WPP 2024 · flag-icons. Every source, its licence and how to cite it →
Verified 2026-09-30 · 73 canaries