As of 2025, the population of Belgium is approximately 11.94 million people (11 941 781), making it the 81st most populous country in the dataset of 217 countries, with a 0.15% share of the combined total.
Over the past five years the population of Belgium changed by +3.49%, and over the past ten years by +5.92%. By five-year growth, Belgium ranks 130th of 217 countries; in terms of momentum, growth is accelerating — from +0.47% to +0.69% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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