Compare · UN World Population Prospects 2024

Algeria and South Korea, side by side

In 2026, half of the people in Algeria are older than 30. In South Korea, half are older than 47.

UN estimates for mid-2023: Algeria 46,164,219 people · South Korea 51,748,739

Algeria 48.0 million people Half are older than 30 7 in 100 are 65 or older

South Korea 51.6 million people Half are older than 47 21 in 100 are 65 or older

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.

Compare shapes Compare sizes

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.

Year 2026 · UN projection

estimatesprojections

men women projected

Verified 2026-09-30 · 73 canaries

DZA × KOR · 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.

Algeria

Children, under 15: 29
Aged 15 to 64: 64
Aged 65 and over: 7

South Korea

Children, under 15: 10
Aged 15 to 64: 69
Aged 65 and over: 21

DZA × KOR · families and lifetimes

Children, and how long lives last

At today's rates, a woman in Algeria would have about 2.6 children in her lifetime. In South Korea, about 0.8. Around 2.1 children per woman keeps a population the same size over time, leaving migration aside. Life expectancy at birth this year: about 77 years in Algeria, about 85 in South Korea.

Children per woman, 2026

Each figure is one child: how many children a woman would have in her lifetime at that year’s rates.

Algeria 2.6

South Korea 0.8

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.

Algeria 77 years

South Korea 85 years

Hatched marks are UN projections (medium variant), not measurements.

DZA × KOR · 1950–2100 · how many

How big, and where they are heading

South Korea has about as many people as Algeria: 51.6 million against 48.0 million.

Algeria's population is 5.3 times what it was in 1950; South Korea's population is 2.6 times what it was in 1950.

Looking ahead: Algeria's population is expected to peak in 2090, and South Korea's population peaked in 2020. The UN expects Algeria to have more people than South Korea from 2032. In 2100: 64.5 million in Algeria, 21.8 million in South Korea (UN projection, medium).

Show the numbers

Year	Algeria: people	South Korea: people	Algeria: half older than	South Korea: half older than	Algeria: children per woman	South Korea: children per woman	Algeria: life expectancy	South Korea: life expectancy
1950	9.01843 million	19.7573 million	19.4	18.7	7.32	6.06	42.7	22.2
1960	11.4249 million	26.1154 million	17.3	19.3	7.50	5.99	40.8	53.8
1970	13.7837 million	32.5422 million	16.3	18.7	7.70	4.46	43.3	62.2
1980	18.6072 million	38.1411 million	16.5	21.9	6.99	2.73	54.5	64.8
1990	25.3758 million	44.0814 million	18.5	26.8	4.51	1.60	67.7	71.0
2000	30.9039 million	46.7667 million	21.8	31.7	2.59	1.47	70.6	76.2
2010	36.1882 million	48.7693 million	26.1	37.6	2.88	1.23	74.1	80.7
2023	46.1642 million	51.7487 million	29.2	45.5	2.77	0.72	76.3	84.3
2030*	50.1542 million	51.1886 million	30.5	49.5	2.45	0.81	77.7	85.1
2040*	54.8735 million	48.9487 million	32.4	54.3	2.16	0.93	79.6	86.2
2050*	59.5656 million	45.1431 million	35.5	57.7	2.00	1.03	81.3	87.3
2060*	62.5900 million	39.8572 million	39.3	61.1	1.91	1.10	83.0	88.5
2070*	63.8590 million	34.4530 million	41.8	62.5	1.86	1.16	84.4	89.6
2080*	64.7507 million	29.6715 million	43.0	64.0	1.82	1.21	85.8	90.7
2090*	65.1155 million	25.4491 million	45.2	62.2	1.79	1.26	87.0	91.9
2100*	64.4875 million	21.8488 million	47.8	60.9	1.78	1.30	88.1	93.1

* UN projection, medium variant. People at mid-year; ages and life expectancy in years.

DZA − KOR · 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 Algeria and which is South Korea, 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; Algeria is drawn in solid blue squares and South Korea 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: Algeria · South Korea. Or pick any two places with the boxes at the top of this page.

Other comparisons

Apparatus

Sources and method

Every figure for Algeria and South Korea 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.

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