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

Q: What is the largest generation in Mongolia?

Gen Alpha is the largest generation in Mongolia, with 895,610 people (25.2%).

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

Mongolia has 862,143 Gen Z, 828,362 Millennials and 269,794 Baby Boomers.

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

Gen Z is 24.2% of Mongolia, the 89th-lowest Gen Z share of the 194 countries.

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

The youngest generations, Gen Alpha and Gen Beta, together number 986,360 in Mongolia, versus 24,828 in the oldest two, the Silent and Greatest generations.

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

Gen Alpha is 25.2% of Mongolia, compared with 19.3% worldwide.

By Marko Visic · Updated October 19, 2026

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

In Mongolia, Gen Alpha is the largest generation: 895,610 people, 25.2% of the population.

See the population pyramid for Mongolia.

Gen Beta: 90,750 (2.6%)
Gen Alpha: 895,610 (25.2%)
Gen Z: 862,143 (24.2%)
Millennials: 828,362 (23.3%)
Gen X: 585,310 (16.5%)
Baby Boomers: 269,794 (7.6%)
Silent Generation: 24,728 (0.7%)
Greatest Generation: 100 (<0.1%)

3,556,798

people on 1 July 2026

25.2%

Gen Alpha, the largest generation

24.2%

Gen Z share, the 89th-lowest of the 194 countries

986,360

under 14 (Gen Alpha + Gen Beta)

24,828

aged 81+ (Silent + Greatest)

Generation Population Distribution - Mongolia

Gen Beta: 2.6%

Gen Alpha: 25.2%

Gen Z: 24.2%

Millennials: 23.3%

Gen X: 16.5%

Baby Boomers: 7.6%

Silent Generation: 0.7%

Greatest Generation: <0.1%

Generation Breakdown by Population - Mongolia

Total Population: 3,556,798

Generation	Birth Years	Age Range (2026)	Population	% of Total	Male	Female
Gen Beta	2025–2039	0–1 years	90,750	2.6%	46,268	44,481
Gen Alpha	2013–2024	2–13 years	895,610	25.2%	459,939	435,672
Gen Z	1997–2012	14–29 years	862,143	24.2%	444,886	417,257
Millennials	1981–1996	30–45 years	828,362	23.3%	420,708	407,655
Gen X	1965–1980	46–61 years	585,310	16.5%	280,639	304,671
Baby Boomers	1946–1964	62–80 years	269,794	7.6%	110,683	159,110
Silent Generation	1928–1945	81–98 years	24,728	0.7%	8,190	16,539
Greatest Generation	before 1928	99+ years	100	<0.1%	20	80
Total			3,556,798	100.0%	1,771,334	1,785,464

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).

Mongolia Generations: Frequently Asked Questions

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

What is the largest generation in Mongolia?

Gen Alpha is the largest generation in Mongolia, with 895,610 people (25.2%).

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

Mongolia has 862,143 Gen Z, 828,362 Millennials and 269,794 Baby Boomers.

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

Gen Z is 24.2% of Mongolia, the 89th-lowest Gen Z share of the 194 countries.

How do the youngest and oldest generations compare in Mongolia?

The youngest generations, Gen Alpha and Gen Beta, together number 986,360 in Mongolia, versus 24,828 in the oldest two, the Silent and Greatest generations.

How does the largest generation in Mongolia compare with the world?

Gen Alpha is 25.2% of Mongolia, compared with 19.3% worldwide.

Explore Generation Data by Country

Other countries in Asia. See all 194 countries →