Compare · UN World Population Prospects 2024

Peru and Saudi Arabia, side by side

Peru in 2026: half the people are older than 32. Saudi Arabia: half are older than 31.

UN estimates for mid-2023: Peru 33,845,617 people · Saudi Arabia 33,264,292

Peru 34.9 million people Half are older than 32 10 in 100 are 65 or older

Saudi Arabia 35.2 million people Half are older than 31 3 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

PER × SAU · 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.

Peru

Children, under 15: 23
Aged 15 to 64: 67
Aged 65 and over: 10

Saudi Arabia

Children, under 15: 24
Aged 15 to 64: 73
Aged 65 and over: 3

PER × SAU · families and lifetimes

Children, and how long lives last

Peru is at about 1.9 children for each woman, at this year's rates; Saudi Arabia is at about 2.3. Around 2.1 children per woman keeps a population the same size over time, leaving migration aside. Life expectancy at birth this year: about 78 years in Peru, about 79 in Saudi Arabia.

Children per woman, 2026

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

Peru 1.9

Saudi Arabia 2.3

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.

Peru 78 years

Saudi Arabia 79 years

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

PER × SAU · 1950–2100 · how many

How big, and where they are heading

There are 35.2 million people in Saudi Arabia and 34.9 million in Peru: about as many people as Peru.

Since 1950 the two have moved differently: Peru's population is 4.5 times what it was in 1950, while Saudi Arabia's population is 20.6 times what it was in 1950.

Looking ahead: Peru's population is expected to peak in 2066, and Saudi Arabia's population is still growing in 2100. In 2100: 38.2 million in Peru, 71.0 million in Saudi Arabia (UN projection, medium).

Show the numbers

Year	Peru: people	Saudi Arabia: people	Peru: half older than	Saudi Arabia: half older than	Peru: children per woman	Saudi Arabia: children per woman	Peru: life expectancy	Saudi Arabia: life expectancy
1950	7.67741 million	1.70327 million	18.9	19.0	6.94	7.58	46.0	40.0
1960	10.1741 million	2.43540 million	18.1	18.6	6.94	7.63	50.6	45.3
1970	13.5012 million	3.56247 million	17.8	17.3	6.32	7.58	47.7	52.7
1980	17.3609 million	6.04800 million	18.4	18.1	5.04	7.14	60.0	62.4
1990	22.0148 million	10.6407 million	19.8	19.0	3.91	5.80	64.0	68.9
2000	26.5983 million	16.1777 million	22.4	20.7	2.85	4.21	69.8	72.6
2010	29.0860 million	25.1571 million	26.2	24.5	2.42	2.81	72.9	75.6
2023	33.8456 million	33.2643 million	30.5	30.2	1.98	2.28	77.7	78.7
2030*	36.1939 million	37.4438 million	33.0	30.7	1.87	2.17	79.0	80.3
2040*	38.7946 million	42.5922 million	36.5	31.7	1.79	1.98	80.7	82.3
2050*	40.5839 million	47.6939 million	40.1	33.0	1.74	1.88	82.3	84.0
2060*	41.5355 million	52.6791 million	43.0	34.0	1.72	1.81	83.8	85.5
2070*	41.6449 million	57.4625 million	45.5	35.0	1.70	1.77	85.1	86.9
2080*	40.9815 million	61.9654 million	47.4	35.8	1.70	1.75	86.3	88.1
2090*	39.7365 million	66.4651 million	48.8	36.4	1.69	1.73	87.3	89.3
2100*	38.1633 million	71.0067 million	49.9	36.8	1.69	1.72	88.3	90.3

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

PER − SAU · 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 Peru and which is Saudi Arabia, 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; Peru is drawn in solid blue squares and Saudi Arabia in open orange squares, so you can see whether each is ahead of the crowd, behind it or in the middle.

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Keep exploring

Each place on its own: Peru · Saudi Arabia. Or pick any two places with the boxes at the top of this page.

Other comparisons

Apparatus

Sources and method

Peru and Saudi Arabia are drawn here from one source and one release: the UN Population Division's World Population Prospects 2024, counted through 2023 and projected on its medium variant after that. Two places read off the same tables can be set against each other; two read off different tables cannot.

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