This statistic shows the median age of the population in Australia from 1950 to 2100. The median age of a population is an index that divides the population into two equal groups: half of the population is older than the median age and the other half younger. In 2020, the median age of Australia's population was 36.9 years.

In June 2022, it was estimated that around 7.3 percent of Australians were aged between 25 and 29, and the same applied to people aged between 30 and 34. All in all, about 55 percent of Australia’s population was aged 35 years or older as of June 2022. At the same time, the age distribution of the country also shows that the share of children under 14 years old was still higher than that of people over 65 years old. A breakdown of Australia’s population growth Australia is the sixth-largest country in the world, yet with a population of around 26 million inhabitants, it is only sparsely populated. Since the 1970s, the population growth of Australia has remained fairly constant. While there was a slight rise in the Australian death rate in 2022, the birth rate of the country decreased after a slight rise in the previous year. The fact that the birth rate is almost double the size of its death rate gives the country one of the highest natural population growth rates of any high-income country.
National distribution of the population Australia’s population is expected to surpass 28 million people by 2028. The majority of its inhabitants live in the major cities. The most populated states are New South Wales, Victoria, and Queensland. Together, they account for over 75 percent of the population in Australia.

Civilian Population: Married: 15 Years & Over: 25-34 Years data was reported at 2,297.915 Person th in Mar 2025. This records a decrease from the previous number of 2,304.223 Person th for Feb 2025. Civilian Population: Married: 15 Years & Over: 25-34 Years data is updated monthly, averaging 1,812.748 Person th from Feb 1978 (Median) to Mar 2025, with 566 observations. The data reached an all-time high of 2,304.223 Person th in Feb 2025 and a record low of 1,670.657 Person th in Jul 1999. Civilian Population: Married: 15 Years & Over: 25-34 Years data remains active status in CEIC and is reported by Australian Bureau of Statistics. The data is categorized under Global Database’s Australia – Table AU.G001: Civilian Population: by Age, Sex and Status.

In 2022, the average female age at marriage was 27.5 years in Australia. The average at separation from their married partner was 39.8 years, and for divorce, the average age was 43.7 years.

In a survey conducted in Australia in 2021, the average age that young respondents aged 14 to 18 years reported first experiencing vaginal sex was 15.3 years. The average age for first viewing pornography was 13.6 years.

Civilian Population: Not Married: 15 Years & Over: Female: 15-19 Years data was reported at 819.868 Person th in Mar 2025. This records an increase from the previous number of 818.548 Person th for Feb 2025. Civilian Population: Not Married: 15 Years & Over: Female: 15-19 Years data is updated monthly, averaging 647.582 Person th from Feb 1978 (Median) to Mar 2025, with 566 observations. The data reached an all-time high of 819.868 Person th in Mar 2025 and a record low of 593.412 Person th in Jul 1995. Civilian Population: Not Married: 15 Years & Over: Female: 15-19 Years data remains active status in CEIC and is reported by Australian Bureau of Statistics. The data is categorized under Global Database’s Australia – Table AU.G001: Civilian Population: by Age, Sex and Status.

This dataset, released December 2016, contains Median age at death of males, 2010 to 2014; Median age at death of females, 2010 to 2014; Median age at death of persons, 2010 to 2014; The data is by Population Health Area (PHA) 2016 geographic boundaries based on the 2016 Australian Statistical Geography Standard (ASGS).

Population Health Areas, developed by PHIDU, are comprised of a combination of whole SA2s and multiple (aggregates of) SA2s, where the SA2 is an area in the ABS structure.

For more information please see the data source notes on the data.

Source: Data compiled by PHIDU from deaths data based on the 2010 to 2014 Cause of Death Unit Record Filessupplied by the Australian Coordinating Registry and the Victorian Department of Justice, on behalf of the Registriesof Births, Deaths and Marriages and the National Coronial Information System.

AURIN has spatially enabled the original data. Data that was not shown/not applicable/not published/not available for the specific area ('#', '..', '^', 'np, 'n.a.', 'n.y.a.' in original PHIDU data) was removed.It has been replaced by by Blank cells. For other keys and abbreviations refer to PHIDU Keys.

The average age at which Australians got married for the first time increased for both men and women between 1997 and 2021. As of 2021, males who married for the first time were on average 30.8 years old, while females were on average slightly younger at 29.4 years old.

first time marriage

Wedding bells chime

The most popular months to get married in 2017 were October and November, with many Australians opting to have their wedding in spring. In fact, over 20 percent of couples chose their wedding date based on a preference for a specific season.

In 2017, amendments to the Marriage Act meant that same-sex couples in Australia could also get legally married. This may change marriage figures in the years immediately following, with many long-term same-sex couples choosing to get married with this law change.

Happily ever after?

While the average age of first marriages has increased, the number of Australians tying the knot has decreased, with the crude marriage rate decreasing continuously across the country. The divorce rate has decreased over the years, largely related to the reduction in the number of marriages overall. In 2017, almost half of all divorces in Australia involved children; this share has not changed significantly over the past five years.

Civilian Population: Not Married: 15 Years & Over: 65 Years & Over data was reported at 1,904.520 Person th in Jan 2025. This records a decrease from the previous number of 1,913.427 Person th for Dec 2024. Civilian Population: Not Married: 15 Years & Over: 65 Years & Over data is updated monthly, averaging 1,073.031 Person th from Feb 1978 (Median) to Jan 2025, with 564 observations. The data reached an all-time high of 1,972.174 Person th in Jun 2024 and a record low of 640.202 Person th in Feb 1978. Civilian Population: Not Married: 15 Years & Over: 65 Years & Over data remains active status in CEIC and is reported by Australian Bureau of Statistics. The data is categorized under Global Database’s Australia – Table AU.G001: Civilian Population: by Age, Sex and Status.

Civilian Population: Not Married: 15 Years & Over: 35-44 Years data was reported at 967.625 Person th in Jan 2025. This records an increase from the previous number of 932.365 Person th for Dec 2024. Civilian Population: Not Married: 15 Years & Over: 35-44 Years data is updated monthly, averaging 735.889 Person th from Feb 1978 (Median) to Jan 2025, with 564 observations. The data reached an all-time high of 975.939 Person th in Oct 2024 and a record low of 216.523 Person th in Feb 1978. Civilian Population: Not Married: 15 Years & Over: 35-44 Years data remains active status in CEIC and is reported by Australian Bureau of Statistics. The data is categorized under Global Database’s Australia – Table AU.G001: Civilian Population: by Age, Sex and Status.

Since 1960, age distribution across Australia's population has observed a fairly significant change. The share of the population below 14 years has dropped from over 30 percent to less than 20 percent; while the share aged over 65 has almost doubled. However, Australia's under-14 population is still larger than its over-65 population. The bulk of the population is aged between 15 and 64 years, and this group had its largest share of the population in 2009 when it made up over two-thirds of the entire population. This gradual change has come as a result of decreasing fertility and higher life expectancy, causing the average age of the population to rise.

The estimated resident population (ERP) is the official measure of the Australian population. This dataset contains annual ERP by country of birth, age and sex at the Australia level. At the state/territory level it is available for Census years only.

This dataset presents data on the population of a region by age group for the Statistical Area Level 4 (SA4) regions as of December 2021. The boundaries for this dataset follow the 2016 edition of the Australian Statistical Geography Standard (ASGS).

The Australian Department of Education, Skills and Employment publishes a range of labour market data on its Labour Market Information Portal. The data provided includes unemployment rate, employment rate, participation rate, youth unemployment rate, unemployment duration, population by age group and employment by industry and occupation.

AURIN has spatially enabled the original data. Data Source: ABS Labour Force Survey, 12 month average, December 2021. The ABS advises that analysis of regional labour force estimates should typically be based on annual averages, which are important for understanding the state of the labour market and providing medium and long-term signals. The application of annual averages, however, is unlikely to accurately or quickly detect turning points in the regional data during periods of significant change (such as during the onset of the COVID-19 pandemic). Original data at the ABS Statistical Area 4 (SA4) level can be found in Table 16. The region named "Western Australia - Outback (North and South)" in the original data has been omitted as it did not match a region within the SA4 2016 ASGS.

In 2022, the average male age at marriage was 29.8 years in Australia. The average at separation from their married partner was 42.6 years, and for divorce, the average age was 46.7 years.

Life expectancy in Australia was just below 35 in the year 1870, and over the course of the next 150 years, it is expected to have increased to 83.2 by the year 2020. Although life expectancy has generally increased throughout Australia's history, there were several times where the rate deviated from its previous trajectory. the most noticeable changes were between 1890 and 1920. This period included Australia's Independence movement, the implementation of the 'White Australia' policy, the First World War and Spanish Flu epidemic, all of which impacted the demographics of Australia.

This dataset, released February 2021, contains Median age at death of males, 2014 to 2018; Median age at death of females, 2014 to 2018; Median age at death of persons, 2014 to 2018;

The data is by Population Health Area (PHA) 2016 geographic boundaries based on the 2016 Australian Statistical Geography Standard (ASGS).

Population Health Areas, developed by PHIDU, are comprised of a combination of whole SA2s and multiple (aggregates of) SA2s, where the SA2 is an area in the ABS structure.

For more information please see the data source notes on the data.

Source: Data compiled by PHIDU from deaths data based on the 2014 to 2018 Cause of Death Unit Record Files supplied by the Australian Coordinating Registry and the Victorian Department of Justice, on behalf of the Registries of Births, Deaths and Marriages and the National Coronial Information System.

AURIN has spatially enabled the original data. Data that was not shown/not applicable/not published/not available for the specific area ('#', '..', '^', 'np, 'n.a.', 'n.y.a.' in original PHIDU data) was removed.It has been replaced by by Blank cells. For other keys and abbreviations refer to PHIDU Keys.

Median age at death years by SLA, from 2003 to 2007.

Civilian Population: Married: 15 Years & Over: 15-24 Years data was reported at 270.273 Person th in Feb 2025. This records an increase from the previous number of 252.050 Person th for Jan 2025. Civilian Population: Married: 15 Years & Over: 15-24 Years data is updated monthly, averaging 355.709 Person th from Feb 1978 (Median) to Feb 2025, with 565 observations. The data reached an all-time high of 513.954 Person th in May 1978 and a record low of 243.703 Person th in Nov 2024. Civilian Population: Married: 15 Years & Over: 15-24 Years data remains active status in CEIC and is reported by Australian Bureau of Statistics. The data is categorized under Global Database’s Australia – Table AU.G001: Civilian Population: by Age, Sex and Status.

There were 13 940 800 Instagram users in Australia in February 2024, which accounted for 50.9% of its entire population. The majority of them were women - 55.7%. People aged 25 to 34 were the largest user group (4 200 000). The highest difference between men and women occurs within people aged 35 to 44, where women lead by 1 200 000.

Median age at death years by SD, from 2003 to 2007.