Population forecast · World Bank data
Australia population forecast
Population, total
Latest · 2025
27.61M
The population of Australia is forecast at 28.25M in 12 months (2026), with an 80% range of 27.49M to 29.91M. The latest World Bank figure is 27.61M for 2025.
In 24 months (2027) and 36 months (2028) the model projects 28.26M and 28.75M (+4.1% versus 2025).
Display-only line. World Bank data is annual: the forecasts are the yearly points marked on the chart. The monthly line between them is a straight-line interpolation for display, not a monthly forecast.
- 6 monthsinterpolated · display only
- 27.93M▲ +1.1%80%: 27.55M – 28.76M
- 12 months2026
- 28.25M▲ +2.3%80%: 27.49M – 29.91M
- 24 months2027
- 28.26M▲ +2.3%80%: 26.15M – 29.30M
- 36 months2028
- 28.75M▲ +4.1%80%: 26.25M – 30.45M
Backtest · last 5 years
How accurate has this been?
| Horizon | Tests | Avg. error | Naive error | In 80% range |
|---|---|---|---|---|
| 12 months | 5 | 0.26M | 0.39M | 100% |
| 24 months | 4 | 0.47M | 0.87M | 75% |
| 36 months | 3 | 0.52M | 1.37M | 100% |
We re-ran the model as if standing at past dates, using only the data available then. Avg. error is the mean absolute gap between the median and what happened; naive assumes no change from the last value. A well-calibrated 80% range contains about 80% of outcomes. Annual series have few test points, so treat these as rough. Methodology
Source data
Recent values
| Year | Value | Change |
|---|---|---|
| 2025 | 27.61M | +1.54% |
| 2024 | 27.19M | +2.00% |
| 2023 | 26.66M | +2.46% |
| 2022 | 26.02M | +1.30% |
| 2021 | 25.69M | +0.14% |
| 2020 | 25.65M | +1.24% |
| 2019 | 25.33M | +1.49% |
| 2018 | 24.96M | +1.51% |
| 2017 | 24.59M | +1.66% |
| 2016 | 24.19M | +1.57% |
About this forecast
- Source
- World Bank, World Development Indicators · series SP.POP.TOTL
- Data through
- 2025 · 66 observations
- Forecast updated
- Sep 28, 2026
- Model
- TimesFM 2.5 (Google Research, Apache-2.0), zero-shot
More forecasts for Australia
Australia overviewOther population forecasts
All 40Statistical model, not financial advice. This forecast is generated automatically from public data; the 80% range means outcomes are expected outside it about one time in five. Don't make financial decisions based only on it.
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