Oceania · AU
Generation Alpha & Beta
in Australia
How many of each cohort Australia has, how fast the next one is arriving, and what the fertility rate, median age and school system mean for both.
Australia has approximately 5 million Generation Alpha people (born 2010–2024), about 18.5% of its population, and roughly 541,473 Generation Beta children born since 2025. Its fertility rate is 1.6 and its child population is roughly flat, projected +2% by 2040.
Births since 1 January 2025 at Australia's own rate, less infant mortality. At 822 births a day it climbs steadily rather than visibly.
Born 2010–2024 — 18.5% of the population, aged 2–16 this year.
About 822 births a day, all of them Generation Beta.
Smaller than the Alpha cohort of 5 million.
Size of the Generation Alpha cohort
Share of the population under 15
Total fertility rate
Child population to 2040 (+2%)
Australia against the world average
Key dates for Australia
11 compulsory years from age 5.
Born on 1 January 2025, they reach Australia's starting age of 5.
Under-15s change by +2% against today.
Eighteen years after the cohort opened.
The cohort closes on 31 December 2039; its youngest members enter school here.
School dates follow Australia's own starting age of 5 and 11 compulsory years, so they differ from the global figures on our Generation Beta page.
Social media age law in Australia
In force: No accounts under 16 on age-restricted social media (minimum age 16). In force since 10 December 2025.
Source: eSafety Commissioner, checked 16 October 2026. Every country's rule: social media age laws by country.
Every figure on this page
Australia in 20 numbers
| Indicator | Australia | World average | Rank |
|---|---|---|---|
| Population | 27.0 million | — | #54 of 194 |
| Generation Alpha (born 2010–2024) | 5 million | — | #68 of 194 |
| Gen Alpha share of population | 18.5% | — | #117 of 194 |
| Projected Gen Beta births 2025–39 | 4 million | — | #69 of 194 |
| Births per year | 300,000 | — | #67 of 194 |
| Births per day | 822 | — | #67 of 194 |
| Under-15 share of population | 18% | 25% | #119 of 194 |
| Total fertility rate | 1.6 | 2.2 | #121 of 194 |
| Median age | 38 years | 31 years | #61 of 194 |
| Life expectancy at birth | 84 years | 73 years | #4 of 194 |
| Urban population | 86% | 58% | #36 of 194 |
| Internet use | 96% | 68% | #21 of 192 |
| Secondary school completion | 90% | 60% | #77 of 189 |
| School starting age | age 5 | — | #164 of 194 |
| Compulsory years of schooling | 11 years | — | #57 of 194 |
| Daily screen time, ages 8–12 | 4.75 hours | — | #3 of 42 |
| Cost of raising a child to 18 | $300k | — | #2 of 61 |
| Under-15 population change to 2040 | +2% | — | #63 of 194 |
| Youth dependency ratio | 27 per 100 adults | — | #119 of 194 |
| Mobile connections per 100 people | 110 | — | #103 of 194 |
Rank is out of the 194 countries profiled here and always runs highest first — so #1 on median age is the oldest country, not the youngest. World averages are population-weighted global figures and are shown only where a comparable one exists. Sources: UN World Population Prospects, World Bank Open Data, UNESCO and ITU, via our sources page.
1950 to 2023, with the UN projection to 2030
Australia birth rate and fertility rate by year
About 304,300 babies were born in Australia in 2023, and women had 1.64 children on average. Since 1950, births peaked in 2018 at about 314,000. Fertility first fell below the replacement level of 2.1 in 1976. Annual births are 22% higher than in 2000.
Fertility rate (children per woman)
Births per year
Thousands of births. Dashed: UN medium-variant projection.
| Year | Births | Fertility rate |
|---|---|---|
| 1950 | 188,800 | 3.06 |
| 1960 | 227,500 | 3.45 |
| 1970 | 257,100 | 2.86 |
| 1980 | 225,800 | 1.90 |
| 1990 | 263,200 | 1.91 |
| 2000 | 249,500 | 1.76 |
| 2010 | 301,500 | 1.95 |
| 2015 | 305,500 | 1.80 |
| 2020 | 295,200 | 1.59 |
| 2021 | 304,200 | 1.65 |
| 2022 | 303,400 | 1.64 |
| 2023 | 304,300 | 1.64 |
| 2025 projected | 304,300 | 1.64 |
| 2030 projected | 299,000 | 1.64 |
UN World Population Prospects 2024, republished by Our World in Data. Years to 2023 are UN estimates, which can differ from a country's own registered counts; later years are the UN medium-variant projection. Every country is ranked on fertility rate by country.
Regional peers
Elsewhere in Oceania
New Zealand
1 million Generation Alpha
Samoa
83,940 Generation Alpha
Kiribati
47,580 Generation Alpha
Micronesia
35,960 Generation Alpha
Tonga
36,070 Generation Alpha
Marshall Islands
11,890 Generation Alpha
Palau
3,160 Generation Alpha
Nauru
4,500 Generation Alpha
Run the numbers yourself
Tools that use this data
Gen Beta by Country Forecast
Where the 2.1 billion Betas will be born, and which countries shrink instead.
Under-15 Share by Country
The countries where Alpha and Beta make up the largest share of the population.
Global Child Population Table
Where the world's children are, ranked by region, with the direction each one is…
Median Age Calculator
What a country's median age implies about its Alpha and Beta share, its dependency…
School-Age Population Forecast
How many children will be of school age in any year, globally or nationally.
Where a tool takes a number it opens prefilled with Australia's own figure rather than the world one, and every input stays editable. The rest are the same ranked tables for every country.
Frequently asked about Australia
How many Gen Alpha are there in Australia?
Approximately 5 million people born between 2010 and 2024 live in Australia, about 18.5% of the population.
How many Gen Beta children are there in Australia?
Roughly 541,473 children have been born in Australia since 1 January 2025, growing by about 34 every hour.
What is the fertility rate in Australia?
Australia has a total fertility rate of 1.6 children per woman, against a replacement level of 2.1 and a world average of about 2.2.
At what age do children start school in Australia?
Compulsory schooling begins at age 5 in Australia, and runs for 11 years.
Is the child population in Australia growing or shrinking?
It is roughly flat. The under-15 population is projected to change by +2% between now and 2040.
How many babies are born in Australia each year?
About 304,300 in 2023, according to UN estimates, down from a peak of about 314,000 in 2018 (the highest since 1950). The UN projects about 299,000 in 2030.
How has the fertility rate in Australia changed over time?
It was 3.06 children per woman in 1950 and 1.64 in 2023. It first fell below the replacement level of 2.1 in 1976.
AlphaBetaMinds (2026). Generation Alpha and Generation Beta in Australia. Retrieved from https://alphabetaminds.com/countries/australia
The printed sheet keeps the headline numbers, the world comparison, the key dates, the full indicator table and this citation, and drops the navigation, the tools and the FAQ. It fits a page or two and needs no login.
Free to reproduce, commercially or not, with a credit and a link. Figures are estimates for 2025–2026 and are updated when the underlying sources are.