Population Pyramids of the World from 1950 to 2100

Sierra Leone Population Pyramid 2027

Sierra Leone
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2027
Population: 9,174,692

Year

-5 -1   2027  +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 2027

By 2027, the population of Sierra Leone is expected to reach 9,174,693. That would be 24.3% more than in 2017 (7,379,299).

With a projected median age of 21.2 years, Sierra Leone would have a youth dependency ratio of 61.4 and an old-age dependency ratio of 5.6 per 100 people of working age. This is an expansive pyramid — each cohort of children is larger than the one above it, the signature of high birth rates and rapid growth.

Ranks #99 of 201 by population Ranks #164 of 201 by median age Ranks #41 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
9,174,693
Median age
21.2
0-14 %
36.8%
65+ %
3.4%
Child dependency
61.4
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 9,174,693 21.2
Togo 10,142,997 20.4
Liberia 5,986,800 20.3
Mauritania 5,608,791 18.8
Gambia 2,945,881 20.1
Frequently asked questions about Sierra Leone's population
What will the population of Sierra Leone be in 2027?
Sierra Leone is projected to have a population of 9,174,693 in 2027.
Is the population of Sierra Leone increasing or decreasing?
Yes, growing: up 24.3% from 2017, with a projected population of 12,948,325 in 2050.
What is the median age in Sierra Leone?
Sierra Leone's median age is 21.2 years.
What share of Sierra Leone's population is over 65 or under 15?
In Sierra Leone, 36.8% of people are under 15 and 3.4% are 65 or older.
What type of population pyramid does Sierra Leone have?
Sierra Leone has an expansive pyramid: a wide base of young cohorts reflecting high fertility and continued population growth.

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