Population Pyramids of the World from 1950 to 2100

Sierra Leone Population Pyramid 2031

Sierra Leone
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2031
Population: 9,870,298

Year

-5 -1   2031  +1 +5

Country

A B C D E F G H I J K L M N O P Q R S T U V W Y Z
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Summary

Sierra Leone in 2031

By 2031, the population of Sierra Leone is expected to reach 9,870,298. Compared with 2021, when the projection stands at 8,094,602, that represents growth of 21.9% over ten years.

Half of the population would be younger than 22.2 years, with 35.2% children under 15 and 3.6% aged 65 or older. The pyramid is expansive: its wide base of young cohorts reflects high fertility and a rapidly growing population.

Ranks #97 of 201 by population Ranks #164 of 201 by median age Ranks #45 of 201 by growth

Share of the population by age group, 1950–2100

Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.

Key indicators for Sierra Leone
Population
9,870,298
Median age
22.2
0-14 %
35.2%
65+ %
3.6%
Child dependency
57.4
Old-age dependency
5.9
Region
AFRICA
Pyramid shape
Expansive
Population 2050
12,948,325
Population 2100
15,934,257
What is driving the change
Births per woman
Total fertility rate, 1960–2023
1234567
1960Replacement level (2.1)2023 · 3.79

In 2023 women in Sierra Leone had on average 3.79 children, above the replacement level of 2.1.

Source: World Bank World Development Indicators, latest available year.

Life expectancy at birth
Years, 1960–2023
Total Women Men
203040506070
19602023 · 61.8

A child born there in 2023 could expect to live 61.8 years on average (63.5 years for girls, 60.1 for boys).

Source: World Bank World Development Indicators, latest available year.

People supported per 100 workers
Dependency ratios, 1950–2100
Children Older adults
22456890
19502100
Migration to and from Sierra Leone
Where immigrants come from (2024)

49,156 immigrants live in Sierra Leone, 0.6% of the population.

Guinea33,542
Liberia8,462
Nigeria2,024
India892
Ghana874
Where emigrants live (2024)

63,631 people born in Sierra Leone live in other countries.

Senegal15,843
Liberia13,878
Guinea8,065
Nigeria4,679
Australia4,218
Explore
Immigration statistics Origin of migrant stocks map

Source: United Nations International Migrant Stock 2024.

How Sierra Leone compares with its neighbours
Country Population Median age Relative size
Sierra Leone 9,870,299 22.2
Togo 11,018,536 21.2
Liberia 6,486,741 21.2
Mauritania 6,217,789 19.4
Gambia 3,190,997 21.3
Frequently asked questions about Sierra Leone's population
How many people are projected to live in Sierra Leone in 2031?
Sierra Leone is projected to have a population of 9,870,298 in 2031.
Is Sierra Leone's population growing or shrinking?
Yes, growing: up 21.9% from 2021, with a projected population of 12,948,325 in 2050.
How old is the population of Sierra Leone?
The median age in Sierra Leone is 22.2 years — half the population is younger, half older.
What share of Sierra Leone's population is over 65 or under 15?
In Sierra Leone, 35.2% of people are under 15 and 3.6% are 65 or older.
What shape is Sierra Leone's population pyramid, and what does it mean?
Sierra Leone's pyramid is expansive — broad at the bottom, the signature of high birth rates and a growing population.

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