What is average age of mothers at childbirth in Australia?

Average age of mothers at childbirth in Australia was 31.39 years in 2023, according to Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data.

What is the highest average age of mothers at childbirth recorded in Australia?

The highest recorded value was 31.39 years in 2023.

What is the lowest average age of mothers at childbirth recorded in Australia?

The lowest recorded value was 26.7 years in 1975.

How does Australia rank for average age of mothers at childbirth?

Australia ranks 34th out of 236 countries with data for 2023.

Is average age of mothers at childbirth rising or falling in Australia?

Over the last ten years it is up 2.5%. The long-run trend across the full record is rising.

Where does this Australia data come from?

The figures come from Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as part of Average age of mothers at childbirth. Statizoid updates them automatically from the source API.

Average age of mothers at childbirth in Australia

Name: Average age of mothers at childbirth in Australia
Creator: Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data
License: CC BY 4.0 (Our World in Data)

Australia: Average age of mothers at childbirth was 31.39 years in 2023. ▲ Rising

Latest (2023)

31.39 years

Change on year

up 0.0%

World rank

34th

of 236 countries

All-time high

31.39 years

in 2023

All-time low

26.7 years

in 1975

Years of data

1950–2023

Average age of mothers at childbirth in Australia, 1950–2023

Source: Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Measured in years.

Analysis

In 2023, average age of mothers at childbirth in Australia stood at 31.39 years. That is the highest value across all 74 years on record.

Compared with earlier readings it is up 2.5% over ten years.

Over the whole period, average age of mothers at childbirth in Australia peaked at 31.39 years in 2023 and was at its lowest, 26.7 years, in 1975.

That places Australia 34th out of 236 countries with data for 2023, putting it in the top quarter.

The long-run direction has been consistently rising across the 74 years of available data.

Averages by decade

Decade	Average	Lowest	Highest	Years
1950s	27.79 years	27.52 years	28.19 years	10
1960s	27.39 years	27.17 years	27.53 years	10
1970s	26.87 years	26.7 years	27.1 years	10
1980s	27.63 years	27.15 years	28.24 years	10
1990s	28.86 years	28.32 years	29.36 years	10
2000s	29.98 years	29.48 years	30.33 years	10
2010s	30.79 years	30.42 years	31.22 years	10
2020s	31.36 years	31.29 years	31.39 years	4

Countries ranked near Australia

31 Algeria 31.45 years compare
33 Canada 31.41 years compare
35 Tunisia 31.33 years compare
36 Vatican 31.26 years compare
37 Chile 31.19 years compare

See the full ranking of 236 places →

More reference data data for Australia

Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 28.02 (2050)
Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 38.41 (2050)
Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 1.21 (2050)
Emission Totals - Indirect emissions (N2O) - Agricultural Soils 38.41 (2050)
Emission Totals - Indirect emissions (N2O) - Crop Residues 2.55 (2050)
Emission Totals - Emissions (CH4) - Enteric Fermentation 2,816 (2050)
Emission Totals - Emissions (CO2eq) (AR5) - Manure left on Pasture 31,458 (2050)
Emission Totals - Emissions (CO2eq) from CH4 (AR5) - Burning - Crop re 499.07 (2050)
Emission Totals - Emissions (CO2eq) from CH4 (AR5) - Enteric Fermentat 78,848 (2050)
Emission Totals - Emissions (CO2eq) from CH4 (AR5) - IPCC Agriculture 85,923 (2050)

All data for Australia →

Frequently asked questions

What is average age of mothers at childbirth in Australia?: Average age of mothers at childbirth in Australia was 31.39 years in 2023, according to Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data.
What is the highest average age of mothers at childbirth recorded in Australia?: The highest recorded value was 31.39 years in 2023.
What is the lowest average age of mothers at childbirth recorded in Australia?: The lowest recorded value was 26.7 years in 1975.
How does Australia rank for average age of mothers at childbirth?: Australia ranks 34th out of 236 countries with data for 2023.
Is average age of mothers at childbirth rising or falling in Australia?: Over the last ten years it is up 2.5%. The long-run trend across the full record is rising.
Where does this Australia data come from?: The figures come from Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as part of Average age of mothers at childbirth. Statizoid updates them automatically from the source API.

Download this data

CSV · JSON — 74 observations, free to reuse under CC BY 4.0 (Our World in Data).

About this data

Indicator: Average age of mothers at childbirth
Unit: years
Source: Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 236 places, 17,683 data points, 1891–2023
Last refreshed: 07 August 2026

Mean age of mothers at the birth of their children if women were subject throughout their lives to the age-specific fertility rates observed in a given year.