Population, Ageing and Households: What the Demographic Readings Say
👥 More People Than Ever, Growing at an Ordinary Pace
Australia’s population reached 27.9 million in March 2026, a new high in each of the last 21 quarters. But the population grew 1.43% over the year, close to its 2011–2025 average of 1.52%. A record total and an ordinary pace of growth are both true at once.
👴 More Older Australians, Ageing at the Usual Speed
There are 27.2 people aged 65 and over for every 100 of working age, up from 20.5 in 2011. That ratio rose 0.43 over the year to March 2026, almost exactly its average annual rise of 0.45.
🏠 Households Forming in Line With Population
About 157,000 households formed in the year to March 2026, a little below the average of 162,000. Household formation has followed population growth closely: it was lowest while the border was closed and highest during the migration surge of 2023.
Most demographic numbers in the news are totals: the population, the number of older Australians, the number of households. Totals like these rise almost every quarter, so a new record is normal and says little about whether conditions are changing. Australian Property Network therefore reads the pace of each change, measured over a full year, and compares it with fifteen years of history.
A car’s odometer shows a new record every time you drive, but that tells you nothing about how fast you are going. The totals are the odometer. The 21400 Series reads the speedometer: how fast the population is growing, how fast it is ageing, and how fast households are forming.
Overseas migration is the part of population change that moves fastest. It went into reverse when the border closed in 2020 and surged to 165,500 people in the March quarter of 2023. Because most migrants are of working age, migration does two things at once.
When migration surges
Population growth and household formation rise, because more people arrive and set up homes. But ageing slows, because the working-age group grows faster than the over-65s. In the year to September 2023, population growth peaked at 2.53% and households formed reached 244,700, while the ageing ratio barely moved.
When migration stops
The reverse happens. In the year to March 2021, with the border closed, population growth fell to 0.10% and household formation to 54,400, while the ageing ratio rose by 0.92, its fastest rise since 2011.
So the four demographic readings tend to cancel each other out. That is why the combined reading changes less than its parts.
The rising number of older Australians matters for housing because of how older households use their homes. A few facts from official and research sources:
- About two-thirds (63.2%) of people aged 65 and over lived in homes owned outright at the 2006 Census (AHURI Positioning Paper 150, 2012, from the 2006 Census).
- Home-owners aged over 75 move at a rate of about 3% a year (AHURI Final Report 321, 2019).
- Fewer than 15% of home-owners aged over 75 in 2001 had moved to a home with fewer bedrooms by 2016 (AHURI).
- The family home is not counted in the Age Pension assets test. Money from selling it is counted, unless it is put towards a new home within the allowed period (Services Australia).
- The median age of moving into permanent residential aged care was 85 (AIHW, 2024–25).
None of this is a criticism of older Australians: staying put is a reasonable choice under the rules as they stand. It means that a growing number of homes change hands slowly, whatever the pace of ageing in any one year.
Australian Property Network combines four readings into one: the pace of population growth, the pace of ageing, the number of households formed over the year, and how fast the number of older people per household is rising. The combined reading, the APN Aggregate Demographic Index™, is +0.0167σ for the March quarter 2026, almost exactly its fifteen-year average.
The totals are at records. The pace of change is ordinary, and the parts offset one another. The one reading running ahead of its average is the number of older people per household, which is rising a little faster than usual.
One companion reading points in a clearer direction. Living costs for households on a pension or benefit rose 4.65% over the year to June 2026, against 3.94% for the Consumer Price Index, and have outpaced it in each of the last 14 quarters, mostly because of housing costs.
If you are renting
Population growth has eased from its 2023 peak and household formation is close to average. Rents depend on much more than demography; the 21400 readings do not show demographic pressure building faster than usual.
If you own a home
The number of older households holding homes for longer keeps rising as a total. That is a slow, steady feature of the market rather than something that changes from quarter to quarter.
If you are trying to buy
The pace of new households forming is about average. Interest rates affect what buyers can borrow; they have much less effect on whether older owners sell.
If you follow the news
A record population is not by itself a sign of rising pressure. Watch the pace of growth and where it comes from: migration moves the readings in opposite directions.
- Australia’s population is a record 27.9 million, but it grew at an ordinary pace over the year (1.43%).
- There are 27.2 people aged 65 and over for every 100 of working age, and the ratio is rising at its usual speed.
- About 157,000 households formed in a year, close to average and in line with population growth.
- Migration pushes the readings in opposite directions, so the combined reading is near average (+0.0167σ).
- Older Australians mostly own outright and move rarely, so a growing number of homes change hands slowly.
- Living costs for pension and benefit households are rising faster than the CPI, led by housing costs.
