Belgium
Belgium has three official languages: Dutch, French and German. A number of non-official minority languages are spoken as well.
As no census exists, there are no official statistical data regarding the distribution or usage of Belgium's three official languages or their dialects. However, various criteria, including the language(s) of parents, of education, or the second-language status of foreign born, may provide suggested figures. An estimated 60% of the Belgian population are native speakers of Dutch (often referred to as Flemish), and 40% of the population speaks French natively. French-speaking Belgians are often referred to as Walloons, although the French speakers in Brussels are not Walloons.
Demographics of Belgium
The exact number of French-speakers in Brussels is hard to determine, but it is estimated that 80% of the people living in Brussels use French and 20% use Dutch in their households, as the sole language or secondary language, while Arabic is also largely spoken. See the Brussels article for more details.
In the table are the top 10 countries by origin of the population of Belgium in 2017