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

Q: What is the largest generation in Thailand?

Gen X is the largest generation in Thailand, with 16,804,642 people (23.5%).

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

Thailand has 14,413,360 Gen Z, 16,192,375 Millennials and 12,942,244 Baby Boomers.

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

Gen Z is 20.1% of Thailand, the 52nd-lowest Gen Z share of the 194 countries.

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

The youngest generations, Gen Alpha and Gen Beta, together number 8,855,736 in Thailand, versus 2,351,258 in the oldest two, the Silent and Greatest generations.

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

Gen X is 23.5% of Thailand, compared with 17.5% worldwide.

By Marko Visic · Updated October 19, 2026

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

In Thailand, Gen X is the largest generation: 16,804,642 people, 23.5% of the population.

See the population pyramid for Thailand.

Gen Beta: 850,672 (1.2%)
Gen Alpha: 8,005,064 (11.2%)
Gen Z: 14,413,360 (20.1%)
Millennials: 16,192,375 (22.6%)
Gen X: 16,804,642 (23.5%)
Baby Boomers: 12,942,244 (18.1%)
Silent Generation: 2,317,300 (3.2%)
Greatest Generation: 33,958 (<0.1%)

71,559,614

people on 1 July 2026

23.5%

Gen X, the largest generation

20.1%

Gen Z share, the 52nd-lowest of the 194 countries

8,855,736

under 14 (Gen Alpha + Gen Beta)

2,351,258

aged 81+ (Silent + Greatest)

Generation Population Distribution - Thailand

Gen Beta: 1.2%

Gen Alpha: 11.2%

Gen Z: 20.1%

Millennials: 22.6%

Gen X: 23.5%

Baby Boomers: 18.1%

Silent Generation: 3.2%

Greatest Generation: <0.1%

Generation Breakdown by Population - Thailand

Total Population: 71,559,614

Generation	Birth Years	Age Range (2026)	Population	% of Total	Male	Female
Gen Beta	2025–2039	0–1 years	850,672	1.2%	438,268	412,404
Gen Alpha	2013–2024	2–13 years	8,005,064	11.2%	4,122,741	3,882,324
Gen Z	1997–2012	14–29 years	14,413,360	20.1%	7,379,522	7,033,838
Millennials	1981–1996	30–45 years	16,192,375	22.6%	8,089,450	8,102,924
Gen X	1965–1980	46–61 years	16,804,642	23.5%	8,012,129	8,792,512
Baby Boomers	1946–1964	62–80 years	12,942,244	18.1%	5,829,744	7,112,500
Silent Generation	1928–1945	81–98 years	2,317,300	3.2%	890,277	1,427,022
Greatest Generation	before 1928	99+ years	33,958	<0.1%	10,938	23,020
Total			71,559,614	100.0%	34,773,069	36,786,546

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).

Thailand Generations: Frequently Asked Questions

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

What is the largest generation in Thailand?

Gen X is the largest generation in Thailand, with 16,804,642 people (23.5%).

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

Thailand has 14,413,360 Gen Z, 16,192,375 Millennials and 12,942,244 Baby Boomers.

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

Gen Z is 20.1% of Thailand, the 52nd-lowest Gen Z share of the 194 countries.

How do the youngest and oldest generations compare in Thailand?

The youngest generations, Gen Alpha and Gen Beta, together number 8,855,736 in Thailand, versus 2,351,258 in the oldest two, the Silent and Greatest generations.

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

Gen X is 23.5% of Thailand, compared with 17.5% worldwide.

Explore Generation Data by Country

Other countries in Asia. See all 194 countries →