Population forecast · World Bank data
Belgium population forecast
Population, total
Latest · 2025
11.94M
The population of Belgium is forecast at 12.03M in 12 months (2026), with an 80% range of 11.90M to 12.19M. The latest World Bank figure is 11.94M for 2025.
In 24 months (2027) and 36 months (2028) the model projects 12.10M and 12.17M (+1.9% 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
- 11.98M▲ +0.4%80%: 11.92M – 12.06M
- 12 months2026
- 12.03M▲ +0.7%80%: 11.90M – 12.19M
- 24 months2027
- 12.10M▲ +1.3%80%: 11.94M – 12.31M
- 36 months2028
- 12.17M▲ +1.9%80%: 11.98M – 12.41M
Backtest · last 5 years
How accurate has this been?
| Horizon | Tests | Avg. error | Naive error | In 80% range |
|---|---|---|---|---|
| 12 months | 5 | 0.02M | 0.08M | 100% |
| 24 months | 4 | 0.03M | 0.17M | 100% |
| 36 months | 3 | 0.08M | 0.26M | 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 | 11.94M | +0.70% |
| 2024 | 11.86M | +0.67% |
| 2023 | 11.78M | +0.85% |
| 2022 | 11.68M | +0.81% |
| 2021 | 11.59M | +0.41% |
| 2020 | 11.54M | +0.43% |
| 2019 | 11.49M | +0.54% |
| 2018 | 11.43M | +0.46% |
| 2017 | 11.38M | +0.39% |
| 2016 | 11.33M | +0.51% |
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 Belgium
Belgium 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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