Population Pyramids of the World from 1950 to 2100

Sierra Leone Population Pyramid 2025

Sierra Leone
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2025
Population: 8,819,794

Year

-5 -1   2025  +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 2025

The population of Sierra Leone in 2025 was 8,819,794. That is 25.3% more than in 2015, when the population stood at 7,037,655.

The median age was 20.7 years, and for every 100 people of working age (15–64) there were 63.7 children under 15 and 5.6 people aged 65 or over. The pyramid is expansive: its wide base of young cohorts reflects high fertility and a rapidly growing population.

Ranks #102 of 201 by population Ranks #165 of 201 by median age Ranks #40 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
8,819,794
Median age
20.7
0-14 %
37.7%
65+ %
3.3%
Child dependency
63.7
Old-age dependency
5.6
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 8,819,794 20.7
Togo 9,721,608 20.1
Liberia 5,731,206 19.8
Mauritania 5,315,065 18.5
Benin 14,814,460 19.1
Frequently asked questions about Sierra Leone's population
What was the population of Sierra Leone in 2025?
Sierra Leone had a population of 8,819,794 in 2025.
Is Sierra Leone's population growing or shrinking?
Yes, growing: up 25.3% from 2015, 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 20.7 years — half the population is younger, half older.
What share of Sierra Leone's population is over 65 or under 15?
3.3% of Sierra Leone's population is 65 or older, and 37.7% is under 15.
What type of population pyramid does Sierra Leone have?
Sierra Leone's pyramid is expansive — broad at the bottom, the signature of high birth rates and a growing population.

Check our other visualizations

Immigration statistics per countries
Immigration statistics per countries
List of countries ordered by their population size
List of countries ordered by their population size
Origin of the migrants stocks per country
Origin of the migrants stocks per country
Population density per country
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Population Projections
Comparison of carbon emissions per country
Population Growth Map per Year
Population Growth Map per Year