Sierra Leone Generation Breakdown 2026: How Many Millennials, Gen Z, and Boomers?

Q: What is the largest generation in Sierra Leone?

Gen Z is the largest generation in Sierra Leone, with 2,857,287 people (31.8%).

Q: How many Gen Z, Millennials and Baby Boomers are in Sierra Leone?

Sierra Leone has 2,857,287 Gen Z, 1,750,386 Millennials and 391,899 Baby Boomers.

Q: What share of Sierra Leone is Gen Z, and how does it rank?

Gen Z is 31.8% of Sierra Leone, the 16th-highest Gen Z share of the 194 countries.

Q: How do the youngest and oldest generations compare in Sierra Leone?

The youngest generations, Gen Alpha and Gen Beta, together number 3,035,740 in Sierra Leone, versus 30,830 in the oldest two, the Silent and Greatest generations.

Q: How does the largest generation in Sierra Leone compare with the world?

Gen Z is 31.8% of Sierra Leone, compared with 24.7% worldwide.

By Marko Visic · Updated October 19, 2026

A UN projection for 1 July 2026 from World Population Prospects 2024 (medium variant).

In Sierra Leone, Gen Z is the largest generation: 2,857,287 people, 31.8% of the population.

See the population pyramid for Sierra Leone.

Gen Beta: 367,856 (4.1%)
Gen Alpha: 2,667,884 (29.7%)
Gen Z: 2,857,287 (31.8%)
Millennials: 1,750,386 (19.5%)
Gen X: 930,604 (10.3%)
Baby Boomers: 391,899 (4.4%)
Silent Generation: 30,796 (0.3%)
Greatest Generation: 34 (<0.1%)

8,996,744

people on 1 July 2026

31.8%

Gen Z, the largest generation

31.8%

Gen Z share, the 16th-highest of the 194 countries

3,035,740

under 14 (Gen Alpha + Gen Beta)

30,830

aged 81+ (Silent + Greatest)

Generation Population Distribution - Sierra Leone

Gen Beta: 4.1%

Gen Alpha: 29.7%

Gen Z: 31.8%

Millennials: 19.5%

Gen X: 10.3%

Baby Boomers: 4.4%

Silent Generation: 0.3%

Greatest Generation: <0.1%

Generation Breakdown by Population - Sierra Leone

Total Population: 8,996,744

Generation	Birth Years	Age Range (2026)	Population	% of Total	Male	Female
Gen Beta	2025–2039	0–1 years	367,856	4.1%	185,936	181,920
Gen Alpha	2013–2024	2–13 years	2,667,884	29.7%	1,343,910	1,323,974
Gen Z	1997–2012	14–29 years	2,857,287	31.8%	1,435,712	1,421,575
Millennials	1981–1996	30–45 years	1,750,386	19.5%	875,892	874,493
Gen X	1965–1980	46–61 years	930,604	10.3%	455,476	475,128
Baby Boomers	1946–1964	62–80 years	391,899	4.4%	178,264	213,634
Silent Generation	1928–1945	81–98 years	30,796	0.3%	12,430	18,365
Greatest Generation	before 1928	99+ years	34	<0.1%	10	24
Total			8,996,744	100.0%	4,487,631	4,509,113

Projected population on 1 July 2026, UN World Population Prospects 2024 (medium variant). Generation definitions: Pew Research Center (Greatest Generation to Gen Z); McCrindle Research (Gen Alpha, Gen Beta).

Sierra Leone Generations: Frequently Asked Questions

Population on 1 July 2026, UN World Population Prospects 2024 (medium variant).

What is the largest generation in Sierra Leone?

Gen Z is the largest generation in Sierra Leone, with 2,857,287 people (31.8%).

How many Gen Z, Millennials and Baby Boomers are in Sierra Leone?

Sierra Leone has 2,857,287 Gen Z, 1,750,386 Millennials and 391,899 Baby Boomers.

What share of Sierra Leone is Gen Z, and how does it rank?

Gen Z is 31.8% of Sierra Leone, the 16th-highest Gen Z share of the 194 countries.

How do the youngest and oldest generations compare in Sierra Leone?

The youngest generations, Gen Alpha and Gen Beta, together number 3,035,740 in Sierra Leone, versus 30,830 in the oldest two, the Silent and Greatest generations.

How does the largest generation in Sierra Leone compare with the world?

Gen Z is 31.8% of Sierra Leone, compared with 24.7% worldwide.

Explore Generation Data by Country

Other countries in Africa. See all 194 countries →