After three decades of uninterrupted expansion, the population of the Brussels-Capital Region stabilized in 2025. As of January 1, 2026, the region counted 1,255,834 inhabitants, a net increase of only 39 people compared to the previous year.
The latest 2026 Demographic Barometer, published by the Brussels Institute for Statistics and Analysis (IBSA), provides a detailed analysis of the Brussels population's evolution in 2025. This report examines various factors such as international immigration, departures to Flanders and Wallonia, births and deaths, as well as changes at the municipal level.
