After thirty years of uninterrupted growth, the Brussels population no longer increased in 2025. The Demographic Barometer 2026 from the Brussels Institute for Statistics and Analysis (IBSA) provides an overview of the demographic evolution in the capital.
This report examines various factors, including arrivals from abroad, departures from Brussels to Flanders and Wallonia, births, and deaths throughout the past year. The evolution per municipality is also detailed.




