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

Q: What is the largest generation in Iceland?

Millennials are the largest generation in Iceland, with 98,066 people (24.4%).

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

Iceland has 85,480 Gen Z, 98,066 Millennials and 66,352 Baby Boomers.

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

Gen Z is 21.2% of Iceland, the 62nd-lowest Gen Z share of the 194 countries.

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

The youngest generations, Gen Alpha and Gen Beta, together number 62,410 in Iceland, versus 14,366 in the oldest two, the Silent and Greatest generations.

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

Millennials are 24.4% of Iceland, compared with 22.5% worldwide.

By Marko Visic · Updated October 19, 2026

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

In Iceland, Millennials are the largest generation: 98,066 people, 24.4% of the population.

See the population pyramid for Iceland.

Gen Beta: 6,648 (1.7%)
Gen Alpha: 55,762 (13.9%)
Gen Z: 85,480 (21.2%)
Millennials: 98,066 (24.4%)
Gen X: 75,654 (18.8%)
Baby Boomers: 66,352 (16.5%)
Silent Generation: 14,235 (3.5%)
Greatest Generation: 131 (<0.1%)

402,329

people on 1 July 2026

24.4%

Millennials, the largest generation

21.2%

Gen Z share, the 62nd-lowest of the 194 countries

62,410

under 14 (Gen Alpha + Gen Beta)

14,366

aged 81+ (Silent + Greatest)

Generation Population Distribution - Iceland

Gen Beta: 1.7%

Gen Alpha: 13.9%

Gen Z: 21.2%

Millennials: 24.4%

Gen X: 18.8%

Baby Boomers: 16.5%

Silent Generation: 3.5%

Greatest Generation: <0.1%

Generation Breakdown by Population - Iceland

Total Population: 402,329

Generation	Birth Years	Age Range (2026)	Population	% of Total	Male	Female
Gen Beta	2025–2039	0–1 years	6,648	1.7%	3,426	3,222
Gen Alpha	2013–2024	2–13 years	55,762	13.9%	28,732	27,029
Gen Z	1997–2012	14–29 years	85,480	21.2%	43,723	41,758
Millennials	1981–1996	30–45 years	98,066	24.4%	52,159	45,908
Gen X	1965–1980	46–61 years	75,654	18.8%	38,998	36,656
Baby Boomers	1946–1964	62–80 years	66,352	16.5%	32,924	33,429
Silent Generation	1928–1945	81–98 years	14,235	3.5%	6,281	7,954
Greatest Generation	before 1928	99+ years	131	<0.1%	42	90
Total			402,329	100.0%	206,284	196,045

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).

Iceland Generations: Frequently Asked Questions

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

What is the largest generation in Iceland?

Millennials are the largest generation in Iceland, with 98,066 people (24.4%).

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

Iceland has 85,480 Gen Z, 98,066 Millennials and 66,352 Baby Boomers.

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

Gen Z is 21.2% of Iceland, the 62nd-lowest Gen Z share of the 194 countries.

How do the youngest and oldest generations compare in Iceland?

The youngest generations, Gen Alpha and Gen Beta, together number 62,410 in Iceland, versus 14,366 in the oldest two, the Silent and Greatest generations.

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

Millennials are 24.4% of Iceland, compared with 22.5% worldwide.

Explore Generation Data by Country

Other countries in Europe. See all 194 countries →