Population forecast · World Bank data
Spain population forecast
Population, total
Latest · 2025
49.36M
The population of Spain is forecast at 49.79M in 12 months (2026), with an 80% range of 49.11M to 51.09M. The latest World Bank figure is 49.36M for 2025.
In 24 months (2027) and 36 months (2028) the model projects 50.37M and 51.05M (+3.4% 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.
- 12 months2026
- 49.79M▲ +0.9%80%: 49.11M – 51.09M
- 24 months2027
- 50.37M▲ +2.1%80%: 49.46M – 51.82M
- 36 months2028
- 51.05M▲ +3.4%80%: 50.16M – 52.82M
Backtest · last 5 years
How accurate has this been?
| Horizon | Tests | Avg. error | Naive error | In 80% range |
|---|---|---|---|---|
| 12 months | 5 | 0.14M | 0.40M | 100% |
| 24 months | 4 | 0.38M | 0.85M | 100% |
| 36 months | 3 | 0.65M | 1.32M | 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 | 49.36M | +1.04% |
| 2024 | 48.85M | +1.03% |
| 2023 | 48.35M | +1.19% |
| 2022 | 47.79M | +0.72% |
| 2021 | 47.44M | +0.18% |
| 2020 | 47.36M | +0.51% |
| 2019 | 47.12M | +0.72% |
| 2018 | 46.78M | +0.45% |
| 2017 | 46.57M | +0.24% |
| 2016 | 46.46M | +0.08% |
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 Spain
Spain 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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