Compare · UN World Population Prospects 2024

Kenya and United Kingdom, side by side

Kenya in 2026: half the people are older than 21. The United Kingdom: half are older than 41.

UN estimates for mid-2023: Kenya 55,339,002 people · United Kingdom 68,682,962

Kenya 58.6 million people Half are older than 21 3 in 100 are 65 or older

United Kingdom 69.9 million people Half are older than 41 20 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

KEN × GBR · 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.

Kenya

Children, under 15: 36
Aged 15 to 64: 61
Aged 65 and over: 3

United Kingdom

Children, under 15: 17
Aged 15 to 64: 63
Aged 65 and over: 20

KEN × GBR · families and lifetimes

Children, and how long lives last

Kenya is at about 3.1 children for each woman, at this year's rates; the United Kingdom is at about 1.5. Around 2.1 children per woman keeps a population the same size over time, leaving migration aside. A baby born in Kenya this year can expect to live about 64 years. In the United Kingdom, about 82.

Children per woman, 2026

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

Kenya 3.1

United Kingdom 1.5

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.

Kenya 64 years

United Kingdom 82 years

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

KEN × GBR · 1950–2100 · how many

How big, and where they are heading

The United Kingdom has about 20% more people than Kenya: 69.9 million against 58.6 million.

Set each against its own 1950 self and Kenya's population is 10.2 times what it was in 1950, the United Kingdom's population is 1.4 times what it was in 1950.

Looking ahead: Kenya's population is expected to peak in 2098, and the United Kingdom's population is expected to peak in 2072. The UN expects Kenya to have more people than the United Kingdom from 2040. In 2100: 104 million in Kenya, 74.3 million in the United Kingdom (UN projection, medium).

Show the numbers

Year	Kenya: people	United Kingdom: people	Kenya: half older than	United Kingdom: half older than	Kenya: children per woman	United Kingdom: children per woman	Kenya: life expectancy	United Kingdom: life expectancy
1950	5.76918 million	50.1210 million	17.0	34.9	7.39	2.22	36.9	68.6
1960	7.69531 million	52.5386 million	15.6	35.5	7.65	2.70	48.5	71.0
1970	11.3688 million	55.6638 million	14.3	34.2	7.94	2.42	54.1	71.9
1980	16.0185 million	56.2821 million	14.4	34.3	7.53	1.89	59.2	73.6
1990	22.8926 million	57.3679 million	15.3	35.9	6.13	1.83	58.3	75.7
2000	30.6429 million	59.0573 million	16.6	37.6	5.14	1.64	56.1	77.8
2010	41.5986 million	63.0065 million	17.9	39.2	4.45	1.92	60.9	80.4
2023	55.3390 million	68.6830 million	20.5	40.8	3.21	1.56	63.6	81.3
2030*	63.1022 million	71.2870 million	22.4	41.7	2.92	1.52	64.9	82.4
2040*	74.1089 million	73.7746 million	25.0	43.1	2.61	1.53	66.5	83.8
2050*	83.5932 million	75.5047 million	27.3	43.9	2.35	1.55	67.9	85.1
2060*	91.5696 million	76.0104 million	29.8	45.7	2.18	1.56	69.2	86.3
2070*	97.8257 million	76.0491 million	32.4	46.9	2.04	1.57	70.4	87.4
2080*	101.744 million	75.9562 million	34.7	47.4	1.95	1.58	71.7	88.5
2090*	103.764 million	75.3783 million	36.6	48.0	1.89	1.59	73.0	89.5
2100*	104.195 million	74.3054 million	38.5	48.9	1.84	1.59	74.4	90.6

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

KEN − GBR · 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 Kenya and which is the United Kingdom, 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; Kenya is drawn in solid blue squares and the United Kingdom 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: Kenya · United Kingdom. Or pick any two places with the boxes at the top of this page.

Other comparisons

Apparatus

Sources and method

Every figure for Kenya and United Kingdom 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.

This is one of 250 pairs with a page. The boxes at the top will take any other two places you want to see side by side.

Sources: UN WPP 2024 · flag-icons. Every source, its licence and how to cite it →

Verified 2026-09-30 · 73 canaries