Here is the short answer: the "typical" Australian family — mum, dad, kids at the table — is no longer typical. As at June 2025, 57.8% of Australia's couple families have no dependent children living at home, according to the ABS Labour Force Status of Families (June 2025). That's 3,685,800 couple families without dependants, against 2,693,400 with them.
This isn't a blip. It's the compounding of three long, slow trends — couples having children later or not at all, parents living long after the kids move out, and more Australians living alone. Between them they've quietly redrawn the household map that most financial defaults were built on.
What the numbers say
The ABS counted 7.7 million families in June 2025. Here's how they break down — this is the table worth saving:
| Family type | Count (June 2025) | Share |
|---|---|---|
| Couple families | 6,379,200 | 82.3% of all families |
| — with dependants | 2,693,400 | 42.2% of couple families |
| — without dependants | 3,685,800 | 57.8% of couple families |
| One-parent families | 1,231,300 | 15.9% of all families |
| — with dependants | 752,000 | 61.1% of one-parent families |
| Other families | 138,100 | 1.8% of all families |
Source: ABS Labour Force Status of Families, June 2025. "Dependants" are children under 15, plus 15–24-year-olds studying full time who still live at home.
The Census tells the same story over a longer arc. Couples without children at home made up 41% of couple families in 1996 and 47% by 2021, per the ABS Census media release (2022). And 25.6% of all occupied private dwellings — 2,370,742 homes — held exactly one person on Census night, August 2021.
Why the family changed
Three forces, all measurable. First, fewer babies: Australia's total fertility rate hit 1.481 in 2024 — a record low, and below replacement level every year since 1976 (ABS Births, Australia, 2024). Families that do have children average 1.8 kids (Census 2021), and the average household is down to 2.5 people.
Second, longer empty-nest years. The couple-without-dependants group is really two groups — younger couples who haven't had children yet, and older couples whose children have left. Both are growing, and the ABS expects the couple-only share of families to keep rising to 38–40% by 2046 (Household and Family Projections 2021–2046, released 28 June 2024).
Third, the rise of living alone. The same projections put lone-person households at 3.4 to 4.0 million by 2046 — growth of +30–50% on 2021, reaching 26–28% of all households. One in four Australian homes already has one name on the lease or the title.
What it means for your money
Most financial rules of thumb quietly assume the 1990s household: two adults, two incomes, two kids, one mortgage. If that's not you — and statistically it probably isn't — the defaults need adjusting, not you.
Couples without kids at home are the segment with the most spare cashflow and the least guidance. If the kids have moved out (or aren't planned), the years of school fees you're not paying are the cheapest retirement top-up you'll ever get — worth modelling in the Super Balance Projector before lifestyle spending absorbs them. The next question is usually timing, which is exactly what When Can I Retire? is for.
Solo households carry every risk on one income: no second earner if a job goes, no one to split the rent with. The standard "three months of expenses" advice was written for two-income families — a lone household is worth stress-testing at more. The Emergency Fund Calculator lets you set the months yourself rather than accept the default.
Buying alone is the other side of that coin. One income halves borrowing power but not property prices, so run How Much Can I Borrow? on your actual single income before falling for a listing priced for two.
None of this is a crisis. It's just composition: the country's households have changed shape faster than the assumptions baked into its money habits. The fix is the same as ever — run your own numbers, for the household you actually live in.