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

Q: What is the largest generation in New Zealand?

Millennials are the largest generation in New Zealand, with 1,169,828 people (22.1%).

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

New Zealand has 1,089,924 Gen Z, 1,169,828 Millennials and 960,542 Baby Boomers.

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

Gen Z is 20.6% of New Zealand, the 56th-lowest Gen Z share of the 194 countries.

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

The youngest generations, Gen Alpha and Gen Beta, together number 831,708 in New Zealand, versus 216,375 in the oldest two, the Silent and Greatest generations.

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

Millennials are 22.1% of New Zealand, 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 New Zealand, Millennials are the largest generation: 1,169,828 people, 22.1% of the population.

See the population pyramid for New Zealand.

Gen Beta: 88,020 (1.7%)
Gen Alpha: 743,688 (14.1%)
Gen Z: 1,089,924 (20.6%)
Millennials: 1,169,828 (22.1%)
Gen X: 1,019,103 (19.3%)
Baby Boomers: 960,542 (18.2%)
Silent Generation: 214,417 (4.1%)
Greatest Generation: 1,958 (<0.1%)

5,287,479

people on 1 July 2026

22.1%

Millennials, the largest generation

20.6%

Gen Z share, the 56th-lowest of the 194 countries

831,708

under 14 (Gen Alpha + Gen Beta)

216,375

aged 81+ (Silent + Greatest)

Generation Population Distribution - New Zealand

Gen Beta: 1.7%

Gen Alpha: 14.1%

Gen Z: 20.6%

Millennials: 22.1%

Gen X: 19.3%

Baby Boomers: 18.2%

Silent Generation: 4.1%

Greatest Generation: <0.1%

Generation Breakdown by Population - New Zealand

Total Population: 5,287,479

Generation	Birth Years	Age Range (2026)	Population	% of Total	Male	Female
Gen Beta	2025–2039	0–1 years	88,020	1.7%	45,191	42,828
Gen Alpha	2013–2024	2–13 years	743,688	14.1%	382,026	361,662
Gen Z	1997–2012	14–29 years	1,089,924	20.6%	559,872	530,052
Millennials	1981–1996	30–45 years	1,169,828	22.1%	588,701	581,126
Gen X	1965–1980	46–61 years	1,019,103	19.3%	499,376	519,727
Baby Boomers	1946–1964	62–80 years	960,542	18.2%	460,251	500,291
Silent Generation	1928–1945	81–98 years	214,417	4.1%	93,119	121,298
Greatest Generation	before 1928	99+ years	1,958	<0.1%	602	1,356
Total			5,287,479	100.0%	2,629,138	2,658,341

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).

New Zealand Generations: Frequently Asked Questions

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

What is the largest generation in New Zealand?

Millennials are the largest generation in New Zealand, with 1,169,828 people (22.1%).

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

New Zealand has 1,089,924 Gen Z, 1,169,828 Millennials and 960,542 Baby Boomers.

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

Gen Z is 20.6% of New Zealand, the 56th-lowest Gen Z share of the 194 countries.

How do the youngest and oldest generations compare in New Zealand?

The youngest generations, Gen Alpha and Gen Beta, together number 831,708 in New Zealand, versus 216,375 in the oldest two, the Silent and Greatest generations.